What do Fathers wear????

My FFIL is wearing the same gray suit as the groomsmen but a different tie. My uncle (who is my father figure and walking me down the aisle) is wearing a navy blue suit with a gray tie.

This is an easy one for you! They wear whatever they want. They are not party of the wedding party so they don't have to match anyone, including each other. It really doesn't matter if the dads wear black, grey or navy suits. They are all neutrals and will all look fine in pics with the wedding party or just the groom. The only color I wouldn't be thrilled about is brown, but that's more because I don't like brown suits.

Pants and a shirt at the very least

You can do what you want on this one. Some dads will match the GM's, some will wear similar suit/tux but in a different color, some will wear their own suit, or whatever they feel comfortable in.

I told the dads to go with something that matched the moms. I figured that's who they would be photographed with the most. FIL ended up wearing something very similar to H to then he had a bit of "wish I were the groom" syndrome happening.

Dresses? Jk have them wear whatever suit they want.

Mine are wearing whatever they want. I actually have no idea what they're wearing haha.

I'm going to ask my dad to match the style since he'll be walking me down the aisle. FH just needs to decide what he wants to do (e.g. is he wearing a 2-piece or 3-piece suit). As far as color I don't mind as long as it's a neutral.

FFIL is welcome to wear whatever he wants. As long as its not shorts lol.

My guys are wearing navy too. We are having the fathers match them as well, same color tie, etc

My dad is wearing the same thing just a different tie that matches my mom's dress. FFIL is the best man so he is going to be wearing the same as groomsmen, but if he wasn't, he'd be wearing a tie that matched FMIL dress. FMIL bought a dress to match his tie instead.

The groom and groomsmen are all wearing light gray tuxes and my dad is wearing a darker gray more charcoal color but he's the only one wearing a specific suit/tux.