Nice collection, I've owned several T/C muzzleloaders including a couple I wish I'd never parted with. I still have a number of them around. Among my favorites is an early .45 cal Hawken, like the center gun in you photo it has the inletted barrel wedge escutcheons, so does the first I bought in about 1976.
You ought to be able to have a good time shooting those for years to come. The first I bought, 47 years ago, has fired thousands of rounds, it's still a good shooter.
I've no idea of your experience level with muzzleloaders but you appear to have three very nice guns so please don't be offended when I suggest clean them immediately after shooting. It breaks the hearts of dedicated muzzloader Shooter's when coming across otherwise fine guns that have been ruined by failures in basic maintenance.