I feel like patty and Richie would’ve been really close. Not just because of how close he was to stan but I think patty would just find him interesting and admire him for his ability to seem so in a sense carefree and with how much pressure she always feels from everyone I feel like hanging out with him would really ease her and she would actually have fun when she was with him I also feel like a side from stan he would really be able to help her articulate things she wanted to say and they would’ve been best pals