A Knight’s Tale turning the joust into a giant pro wrestling event with Chaucer as a promoter and MC and CTE-riddled meathead knights galore is, vibes wise, the closest approximation to actual medieval knightly culture you’re going to find.
Restitution of one of the 25 armed familiars Sforza wanted for "going out on horse" by an ordonnance of 1473. Another 25 mounted crossbowmen are mentioned. Their equipment was maybe the same.
Brigandine colour is arbitrary. A giornea at the Sforza devise was probably worn.