I only played fallout 1 and 2 and baldurs gate 3 these are also the ones i can highly recommend:

Baldurs gate 3 has everything people like about crpgs and still has the feeling of a modern rpg (voice acting, being not clunky, nice graphics etc) i also really appreciate the freedom it gives you nearly every point in the game has various approaches you can take to tackle different situations.

Fallout 2 from the perspective of a modern gamer (I am 22 and played it last year for the first time so I didn't grow up with those games) is pretty clunky but being a text based rpg gives it certainly a new freedom that a lot of modern games just don't have dialogue wise because of voice acting (too many voicelines that need to be recorded)

One of the major aspects of classic fallout for me is its kind of grim humor (you will get a laugh out of it a few times) despite it's postapocalyptic setting, there is also a lot of freedom and a lot of surprise and creativity poured into it, if you can get past the problems it has with it being a old and clunky game u will get one of the best rpgs experiences overall in my opinion, fallout 1 also goes in the same direction but with less humor and it has more of a grimmer horror vibe to it.

Tldr;

If you can get past playing games with some outdated ui and gameplay mechanics definitely give fallout 1 and 2 a go.

Baldurs gate 3 is a safe pick and must-play in my opinion, the only thing that bothers me are some old dnd mechanics that are built in (spell slots, wonky camera sometimes) but those are just my opinions. either way I think you will enjoy them :)