in depth dual- and multi-classing?

my favorite classic roguelike is tales of maj'eyal with a(n ancient) dual classing mod installed. my favorite final fantasy is XII the zodiac age. my favorite borderlands is wonderlands (still kinda mid though). i loved baldur's gate 3 and the owlcat pathfinder games. my peak arpg is path of exile with titan quest 2 earning an honorable mention.

what are your favorite rpgs and rpg adjacent games that include in depth, flexible class systems?