What Stands I think the Logical Proposals wavewave family would have:
Soundwave: Hermit Purple. This one's pretty easy, it's got everything a wave of sound could want: break a camera and get photos of a picture anywhere in the world, have a screen to project onto and read minds, just use the vines on a TV screen and get a message like "x is a traitor". Or Moody Blues since being able to see and hear what happened to a singular person would make for great intell depending on who it is.
Shockwave: Gold Experience. Shockwave would love having it, funding becomes a far smaller issue if he can grow the body parts himself. Not to mention the research he'd do testing the limits, how big can the being he grows be relative to the original objects mass? Can he grow an extinct species? And he'd love finding these things out.
Ravage: Harvest. Being the only responsible child is hard, much easier when you have 500 tiny buggers to keep watch on everyone.
Buzzsaw: Kraft Work. Given his weapon building I feel like he'd find some use for being able to store however much kinetic energy in an object he desires then release it all at once.
Laserbeak: Mr. President. With the caveat that he just had the user on him at all times. Laserbeak wants a nap, just pull out Mr. President, hide it, and take a nap in the key room, he can even fill it with all his favourite blankets.
Rumble & Frenzy: Star Platinum & The World. This one's the most obvious, SP and TW stop time for 5 seconds, that's 5 seconds of free prank set up.
Enemy: Survivor. Probably a bit too surface level for his character but it makes sense. He wants enemies, Survivor makes everyone around him so mad they start beating each other to death.
Flip Sides: Sticky Fingers. It's got a pocket dimension to explore long range travel purposes with (idk if it can do that but presumably if Sticky Fingers opened a zipper in one place then went hundreds of miles away and opened another they should connect) and I think Flips would find that interesting.
Beastbox: Man in the Mirror. So long as he has a mirror shard with him he can hide away in the mirror world whenever he's feeling overwhelmed and come back when he feels better.
Slugfest: Pearl Jam. He may not be a cook, but given the positive effects Pearl Jam has on the consumers he'd absolutely learn how to cook to give healing meals to refugees.
Squawktalk: Bohemian Rhapsody. I don't know if It works if it's only audio but it turns fiction to life and what better way to tell your stories then making them real? (Just ignore the part where people are forced to play a part in the stories, usually the one who dies)
Garboil: Earth, Wind and Fire. Technically not a stand (but maybe it is who knows) the shapeshifting would be really handy for painting, don't wanna use a picture or just memory to base a drawing on? Just shapeshift into what you wanna draw.
Overkill: Scary Monsters. It can turn people into dinosaurs. He'd finally have Dino friends that the Autobots don't steal away before begging to hand them back. (Targets of it retain their sentience right? I can't remember)
Howlback: Killer Queen. This isn't because of the fact it's a cat, nor is it about it being able to turn objects into bombs or its tertiary bomb Bites the Dust being able to rewind time an hour. No, this is about Sheer Heart Attack being indestructible and as such the perfect thing to enjoy biting to no end, and honestly what more does Howlback even want in life?
Ratbat: Kiss. Sure, the duplicated objects crash back together after the sticker comes off, but so long as that happens long after he sells them it's not his problem.
Wingthing: I'mma be real, I got nothing, he got killed in the great cassette culling of chapter 36 and he was introduced in that chapter. Weather Report? Because he wanted to know how rain works?