Edge Runners and Arcane are S tier.
Really fun adaptations with compelling stories, fun characters and great visuals. Maybe more importantly, they tell fun new stories that are complementary to the games and don't just feel like retreating familiar ground.
Castlevania S1-2 are A tier.
Awesome adaptation with nice pacing and visuals. Never really liked the voice acting that much, and it focused on a familiar story, but overall really good. The other seasons are like C tier.
TLOU is B tier
It had solid production values and acting but it's just the same story and IMO the game is a much better way to experience it. I don't really feel I gained anything by watching the show
Twisted Metal was C tier:
Way better than I expected it to be, but still nothing special. A sort of fun "time waster" show not one you'll remember for long.
Halo was D or F.
Only saw S1, but there's like 3 episodes worth of decent content in a 9 episodes season.
Haven't seen the rest. I've watched 2 episodes of Fallout though and it's pretty fun so far.