Since there seems to be at least a little interest in the Tribe, here is a Boros list. It is designed to win quickly 😀 or not at all 😭. There were similar decks posted on MTGGoldfish but I have lost track of whom to credit. It hasn't been updated for a few months, so there may be some new tech available. I'd love to hear about it.
During Throne of Eldraine Standard, I played Orzhov knights with some success. I briefly tried them in Pioneer, but I pretty quickly abandoned that effort. Some new toys have been released since then, so I thought I'd update the list, run it up the flagpole and see if anyone salutes.
liking the use of Foulmire Knight in the pioneer deck. Have a play set of it in my build as well. It trades well with early attacks from other aggressive decks.
has Midnight Reaper been working well for you? Haven't tried that card yet.