Since my friend Charlie P. has already ID'ed your bullets #2 and #3, all I need to do is tell you about bullet#1. (Thanks, Charlie.)
Ordinarily, we relic-ID helpers need precise measurements to accurately ID a bullet. But the distinctive serrations on your bullet's sides make me reasonably certain about its ID, even without knowing the measurements. It is a civil war era yankee "early model" bullet for the .44 Colt Revolver. Your bullet was manufactured by the Watervliet Arsenal, which is located in the state of New York. The serrations on its lower sides were made to help hold onto the paper powder-cartridge.