diff --git a/osu.Game/Overlays/Profile/Header/Components/RankGraph.cs b/osu.Game/Overlays/Profile/Header/Components/RankGraph.cs
index 7ba8ae7c80..3312cb2c4f 100644
--- a/osu.Game/Overlays/Profile/Header/Components/RankGraph.cs
+++ b/osu.Game/Overlays/Profile/Header/Components/RankGraph.cs
@@ -8,7 +8,6 @@ using Humanizer;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions.LocalisationExtensions;
 using osu.Framework.Graphics;
-using osu.Framework.Localisation;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Resources.Localisation.Web;
@@ -61,40 +60,16 @@ namespace osu.Game.Overlays.Profile.Header.Components
             placeholder.FadeIn(FADE_DURATION, Easing.Out);
         }
 
-        protected override object GetTooltipContent(int index, int rank)
+        protected override UserGraphTooltipContent GetTooltipContent(int index, int rank)
         {
             var days = ranked_days - index + 1;
 
-            return new TooltipDisplayContent
+            return new UserGraphTooltipContent
             {
-                Rank = rank.ToLocalisableString("\\##,##0"),
+                Name = UsersStrings.ShowRankGlobalSimple,
+                Count = rank.ToLocalisableString("\\##,##0"),
                 Time = days == 0 ? "now" : $"{"day".ToQuantity(days)} ago"
             };
         }
-
-        protected override UserGraphTooltip GetTooltip() => new RankGraphTooltip();
-
-        private class RankGraphTooltip : UserGraphTooltip
-        {
-            public RankGraphTooltip()
-                : base(UsersStrings.ShowRankGlobalSimple)
-            {
-            }
-
-            public override void SetContent(object content)
-            {
-                if (!(content is TooltipDisplayContent info))
-                    return;
-
-                Counter.Text = info.Rank;
-                BottomText.Text = info.Time;
-            }
-        }
-
-        private class TooltipDisplayContent
-        {
-            public LocalisableString Rank;
-            public string Time;
-        }
     }
 }
diff --git a/osu.Game/Overlays/Profile/Sections/Historical/UserHistoryGraph.cs b/osu.Game/Overlays/Profile/Sections/Historical/UserHistoryGraph.cs
index 85287d2325..d86e976e70 100644
--- a/osu.Game/Overlays/Profile/Sections/Historical/UserHistoryGraph.cs
+++ b/osu.Game/Overlays/Profile/Sections/Historical/UserHistoryGraph.cs
@@ -28,43 +28,11 @@ namespace osu.Game.Overlays.Profile.Sections.Historical
 
         protected override float GetDataPointHeight(long playCount) => playCount;
 
-        protected override UserGraphTooltip GetTooltip() => new HistoryGraphTooltip(tooltipCounterName);
-
-        protected override object GetTooltipContent(DateTime date, long playCount)
+        protected override UserGraphTooltipContent GetTooltipContent(DateTime date, long playCount) => new UserGraphTooltipContent
         {
-            return new TooltipDisplayContent
-            {
-                Name = tooltipCounterName,
-                Count = playCount.ToLocalisableString("N0"),
-                Date = date.ToLocalisableString("MMMM yyyy")
-            };
-        }
-
-        protected class HistoryGraphTooltip : UserGraphTooltip
-        {
-            private readonly LocalisableString tooltipCounterName;
-
-            public HistoryGraphTooltip(LocalisableString tooltipCounterName)
-                : base(tooltipCounterName)
-            {
-                this.tooltipCounterName = tooltipCounterName;
-            }
-
-            public override void SetContent(object content)
-            {
-                if (!(content is TooltipDisplayContent info) || info.Name != tooltipCounterName)
-                    return;
-
-                Counter.Text = info.Count;
-                BottomText.Text = info.Date;
-            }
-        }
-
-        private class TooltipDisplayContent
-        {
-            public LocalisableString Name;
-            public LocalisableString Count;
-            public LocalisableString Date;
-        }
+            Name = tooltipCounterName,
+            Count = playCount.ToLocalisableString("N0"),
+            Time = date.ToLocalisableString("MMMM yyyy")
+        };
     }
 }
diff --git a/osu.Game/Overlays/Profile/UserGraph.cs b/osu.Game/Overlays/Profile/UserGraph.cs
index b88cc32ff7..502bbbe1a6 100644
--- a/osu.Game/Overlays/Profile/UserGraph.cs
+++ b/osu.Game/Overlays/Profile/UserGraph.cs
@@ -24,7 +24,7 @@ namespace osu.Game.Overlays.Profile
     /// </summary>
     /// <typeparam name="TKey">Type of data to be used for X-axis of the graph.</typeparam>
     /// <typeparam name="TValue">Type of data to be used for Y-axis of the graph.</typeparam>
-    public abstract class UserGraph<TKey, TValue> : Container, IHasCustomTooltip
+    public abstract class UserGraph<TKey, TValue> : Container, IHasCustomTooltip<UserGraphTooltipContent>
     {
         protected const float FADE_DURATION = 150;
 
@@ -118,23 +118,21 @@ namespace osu.Game.Overlays.Profile
         protected virtual void ShowGraph() => graph.FadeIn(FADE_DURATION, Easing.Out);
         protected virtual void HideGraph() => graph.FadeOut(FADE_DURATION, Easing.Out);
 
-        public ITooltip GetCustomTooltip() => GetTooltip();
+        public ITooltip<UserGraphTooltipContent> GetCustomTooltip() => new UserGraphTooltip();
 
-        protected abstract UserGraphTooltip GetTooltip();
-
-        public object TooltipContent
+        public UserGraphTooltipContent TooltipContent
         {
             get
             {
                 if (data == null || hoveredIndex == -1)
-                    return null;
+                    return default;
 
                 var (key, value) = data[hoveredIndex];
                 return GetTooltipContent(key, value);
             }
         }
 
-        protected abstract object GetTooltipContent(TKey key, TValue value);
+        protected abstract UserGraphTooltipContent GetTooltipContent(TKey key, TValue value);
 
         protected class UserLineGraph : LineGraph
         {
@@ -207,12 +205,12 @@ namespace osu.Game.Overlays.Profile
             }
         }
 
-        protected abstract class UserGraphTooltip : VisibilityContainer, ITooltip
+        private class UserGraphTooltip : VisibilityContainer, ITooltip<UserGraphTooltipContent>
         {
-            protected readonly OsuSpriteText Counter, BottomText;
+            protected readonly OsuSpriteText Label, Counter, BottomText;
             private readonly Box background;
 
-            protected UserGraphTooltip(LocalisableString tooltipCounterName)
+            public UserGraphTooltip()
             {
                 AutoSizeAxes = Axes.Both;
                 Masking = true;
@@ -238,10 +236,9 @@ namespace osu.Game.Overlays.Profile
                                 Spacing = new Vector2(3, 0),
                                 Children = new Drawable[]
                                 {
-                                    new OsuSpriteText
+                                    Label = new OsuSpriteText
                                     {
                                         Font = OsuFont.GetFont(size: 12, weight: FontWeight.Bold),
-                                        Text = tooltipCounterName
                                     },
                                     Counter = new OsuSpriteText
                                     {
@@ -268,7 +265,12 @@ namespace osu.Game.Overlays.Profile
                 background.Colour = colours.Gray1;
             }
 
-            public abstract void SetContent(object content);
+            public void SetContent(UserGraphTooltipContent content)
+            {
+                Label.Text = content.Name;
+                Counter.Text = content.Count;
+                BottomText.Text = content.Time;
+            }
 
             private bool instantMove = true;
 
@@ -292,4 +294,12 @@ namespace osu.Game.Overlays.Profile
             protected override void PopOut() => this.FadeOut(200, Easing.OutQuint);
         }
     }
+
+    public class UserGraphTooltipContent
+    {
+        // todo: change to init-only on C# 9
+        public LocalisableString Name { get; set; }
+        public LocalisableString Count { get; set; }
+        public LocalisableString Time { get; set; }
+    }
 }