i have a very poor idea of the answer for that but i know that in the show Mabel says she likes hugs. so cuddles and kisses i think would be Mabel’s favorite– honestly she just wants a boyfriend lol. Dipper i think is into… “deeper stuff” lol but still enjoys the small things. but i think, overall, he takes a relationship more seriously (but i also think he is more aware of the problems, regarding incest, that come with the “deeper stuff” too and that gets to him. i think he’d be full of guilt and stuff). Idk that’s just my insight on it.