All of the 2024 PHB options give you something solid enough up to level 11 or so. After that, the benefits tail off.
1. beast master gives you a pet to fight alongside. No real damage bookst, but tactical control and fun.
2. Fey wanderer +1d4 once per turn. This is the weakest for combat, but lots of out of combat flexibility.
3. Gloom Stalker: exactly what you ask for: +2d6 WIS/long rest times, and a bonus to initiative. If you play human you get a free feat that could be used for Magic Initiate Wizard, and that gives you access to Shield or Find Familiar as well as some cantrips.This is your strongest option.
4. Hunter: colossus slayer gives you +1d8 once per turn as long as the creature you hit isn't at full HP.
Combined with Hunter's Mark, you are doing solid melee damage if you want, and it can be built with Wis, Str, or Dex as your primary as long as Dex is at least 14.