Restructured the project structure back to the way it was, there's no reasonable way to split the modules

src/NadekoBot/Db/Models/anti/AntiAltSetting.cs

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+namespace Nadeko.Bot.Db.Models;
+
+public class AntiAltSetting
+{
+    public int Id { get; set; }
+    public int GuildConfigId { get; set; }
+    public TimeSpan MinAge { get; set; }
+    public PunishmentAction Action { get; set; }
+    public int ActionDurationMinutes { get; set; }
+    public ulong? RoleId { get; set; }
+}

src/NadekoBot/Db/Models/anti/AntiRaidSetting.cs

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+#nullable disable
+namespace Nadeko.Bot.Db.Models;
+
+
+public class AntiRaidSetting : DbEntity
+{
+    public int GuildConfigId { get; set; }
+    public GuildConfig GuildConfig { get; set; }
+
+    public int UserThreshold { get; set; }
+    public int Seconds { get; set; }
+    public PunishmentAction Action { get; set; }
+
+    /// <summary>
+    ///     Duration of the punishment, in minutes. This works only for supported Actions, like:
+    ///     Mute, Chatmute, Voicemute, etc...
+    /// </summary>
+    public int PunishDuration { get; set; }
+}

src/NadekoBot/Db/Models/anti/AntiSpamIgnore.cs

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+namespace Nadeko.Bot.Db.Models;
+
+public class AntiSpamIgnore : DbEntity
+{
+    public ulong ChannelId { get; set; }
+
+    public override int GetHashCode()
+        => ChannelId.GetHashCode();
+
+    public override bool Equals(object? obj)
+        => obj is AntiSpamIgnore inst && inst.ChannelId == ChannelId;
+}

src/NadekoBot/Db/Models/anti/AntiSpamSetting.cs

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+namespace Nadeko.Bot.Db.Models;
+
+#nullable disable
+public class AntiSpamSetting : DbEntity
+{
+    public int GuildConfigId { get; set; }
+    public GuildConfig GuildConfig { get; set; }
+
+    public PunishmentAction Action { get; set; }
+    public int MessageThreshold { get; set; } = 3;
+    public int MuteTime { get; set; }
+    public ulong? RoleId { get; set; }
+    public HashSet<AntiSpamIgnore> IgnoredChannels { get; set; } = new();
+}