I own quite a few handguns that are suitable for carry.
But I only carry three with any degree of regularity. A 9mm, a 380, and in my vehicle a 40 S&W caliber. There is also a ten plus one 45 that sometimes gets carried.
All of them have the same manual of arms. Not necessary to use an external safety to carry safely in condition one, all DAO with no magazine disconnect.
I have a selection of holsters for each and frequently carry two and a spare loaded magazine for each. The pocket carried 380 is virtually always on me (where legal), no matter what else I am carrying.