Looking for 6mm black powder era ruleset for army sized battles tro work

I've been working on a mesh army for a black powder French army, I have Cavalry (12), Infantry(16), Artillery(8), and Commanders(4). One thing I am concerned about when picking a ruleset is being able to keep track of which base of models is which unit specifically for games with deeper list building.

I am definitely looking for a decent mix of list building (if possible, I'm new to black powder era), but also "mini agnostic" enough for me to work with the "low res" minis I am working with lol.

I appreciate any reccomendations for games that could work in this scale for this era, even if it doesn't match my criteria! I would love to hear about the options for getting into 6mm black powder era!