In some alternate Marvel realities Steve Rogers misses out on the super solder serum and it goes instead to one of his handlers, Peggy Carter. She has powers identical to Captain America but gets to keep her own name.
References: [Dr. Strange in the Multiverse of Madness] [2022] [wields shield; flight via jetpack; skilled hand to hand combatant; killed by Scarlet Witch; ref to as the first Avenger; ]
[patriot]
Metahuman Database 