It depends on your preferences, without knowing those it's hard to suggest one.
Baldur's Gate 3 is not fully released (if I remember correctly), it's also the only fantasy genre on the list. So if you prefer playing complete games or non-fantasy genre, I would pick one of the other games.
ATOM RPG is reminiscent of classic Fallout games but does its own thing too. It's more unpolished because it's an indie title and it also has a little of the famous "euro-jank" in it. It's a great game for the price.
Wasteland 3, it's more polished but also a more tactical RPG than ATOM. Although, even being more tactical, it is still a nice cRPG. So if you prefer tactical, this one is definitely what I would suggest.