3 Best men?

If you want your brothers to stand with you on your side I’d probably just call them bridesmen.

Is there a reason you can’t just call them groomsmen? That’s what “second-place best man” is.

I think it would make the most sense to have your father be the best man, then the brothers be groomsmen.

Or, you could eliminate titles altogether. You could just ask all of them to stand with you.

Groomsmen only makes sense if OP is the groom.

Not able to tell from the post but is the OP the bride or groom? Usually there is only one best man. When you have more than one, the title loses its meaning. Also the bride picks her attendants to stand on her side and the groom picks his to stand with him. If bride is close to her brother/s , it’s more appropriate for them to stand on her side. Same for the groom’s sister, as an example. If the bride has no relationship with the groom’s female relatives, they should not be standing on her side. Same for when the bride has her own female relatives she is not close to but the parents are pressuring everyone regardless. The same applies to the groom. Don’t have anyone stand on either side who is not super close to the person they are standing up for.

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People can, of course, do it both ways, but IMO it goes way too far to suggest that it's more appropriate for the groom's sisters to stand on his side and vice versa. Assuming they get along, it can be a nice way welcome a new brother or sister-in-law. You don't have to be "super close" yet. Weddings are about two families coming together. There's nothing inappropriate about it.

View Quoted Comment Since they mentioned asking Dad to be the best man, I was just assuming groom. If not, they can certainly be bridesmen. I was in a wedding party with a MOH, one bridesmaid, and one bridesman (the bride’s brother).

You could always have one of them read something during the ceremony, say a prayer before eating, or welcome speech at the reception.

When I was still planning on having my sister in my wedding I was thinking about making up a title like “Sister of Honor” so she would stand out. So you could always do a word play like that. Maybe “Best Brother” or “Brother of Honor” or something like that.

I agree. Your dad should be your best man. And they can be your groomsmen. Depending on your level of comfort, you can bring it up at the wedding if you speak at dinner about how they are all your best men so they know the level of importance