I do my best to be accurate with all the art credits but it might not be perfect and I may have forgotten a few :(

Ermame https://twitter.com/ermame26 - Rosalina panels, buzBlush, buzLuma
Pixi https://twitter.com/Pixii_Chan buzSalt, buzThink (Olimar)
Akai Riot https://twitter.com/AkaiRiot buzHype
LittlePoyu https://twitter.com/LittlePoyu (Twitter gone?)
Kiwi! https://twitter.com/ToasterKiwi buzGasm, buzHiYo, buzBus1 buzBus2, buzCry, buzHiYo, buzKiss
K3lly https://twitter.com/K3llyArt Various vocaloid badges
5uspenders https://twitter.com/5uspenders (Twitter gone?)
Klimtiq https://twitter.com/klimtiq?lang=en buzLove, buzEtte
Rosedoodles https://twitter.com/rosedoodles buzPog, buzAYAYA, buzBan, buzThink (Greninja), buzLick emotes, 9s, Aerith, Meiko, Megumin, Miku, Shinobu, Rosalina badges
ZeliaVee https://twitter.com/ZeliaVee buzBang, buzSquidlove, buzMinmin
Marikyuunn https://twitter.com/marikyuunn buzLUL, buzBanger, buzNoods 1-3, buzDragon 1-2, buzBag, buzBooty, buzAraAra, buzAngry, various sub badges
XanaduAvici https://twitter.com/XanaduAvici Shantae badge
Tsumibro https://twitter.com/BrodTsumi Tier 1 sub notification with Rosalina & Luma, follower notifications with Rosa on lylat (He didn't make these for me but I got permission to use them)
AzureBlade https://twitter.com/AzureBladeXIII Liquid Roslaina/ Olimar poster on my wall, also one of my controller skins