Gender Neutral Wedding Party Attire

OMG I love this! They all look fabulous! Thank you for validation that folks are going to look amazing if we do this look

That's a nice option, however, we want folks to look the same. My friend loves dresses and pants, so I think she'd be flexible. My partner's side doesn't want to wear the typical "bridesmaid" dresses, so they are thinking of doing something similar.

Do you want all of them to match or just look cohesive?

Personally, I wouldn't feel all that comfortable wearing a suit or pants with a button down shirt and suspenders. I would absolutely do it if I was in the wedding party of a dear friend and that is what they wanted, but I would feel way more comfortable if I could wear something a bit more feminine. I think if you pick a color scheme and stick with it, then your groomspeeps can wear a mix of dresses, jumpsuits, pants, etc that all look like they go together while allowing each of them to wear something they truly feel comfortable in.

Edit: Saw that you want them all to look the same. Assuming you have smallish wedding parties and you feel really comfortable with the people in them, I'd have a conversation with them about what you are thinking and see how they react. The goal is to find something you love that they feel comfortable in, so if you can reach that point then you are golden!