With my only experience in 3d mario games beforehand being 3d world odyssey and parts of 64 ive played, Galaxy definitely stands out as it puts a greater emphasis on the story of rosalina and the worldbuilding as a whole which I really appreciated. My only real complaints is the one of the galaxies I didn't really enjoy that much (fire and ice one) and that at times the movement was a bit clunky, but this was only in specific parts where the perspective shifted a lot and doesn't take away too much from the experience.
Really enjoyed this game and am looking forward to playing and beating the other games in 3d allstars, especially 64 as the jump from odyssey to it was a bit jarring for me, specifically how the worlds are set up in that game compared to odyssey