Companion mods

[Kilkito]

Can anyone tell me the best mods for companions was trying to find one that makes them level 1 so I can level them which way I want

[Action Man]

You can try out Distinguished Service. I've used it before.

When one of your units (usually max tier level, but I think this can be adjusted) gets the required amount of kills (also specified by you in game files), you can promote them to a companion. You get to choose their skill sets. The number of kills they get determines how good these skills are. Their name/appearance/traits are randomly determined, so you'd need another mod if you want to customize that.

You pick every perk and focus point assignment for them, so you can build them how you want. They keep skill points from whatever unit they were before.

[Zorlond]

While not the mod you asked for, I do like this one...
https://steamcommunity.com/sharedfiles/filedetails/?id=2977079318
Just about any random person you bump into can be turned into a companion. Want an entire army of companions? You can do that, and they'll be terrifyingly powerful... once they actually grind enough levels and get enough gear. Which can take ages...

EDIT: I realized that if you do try having 100+ companions, you'll probably want these to spare your sanity...
https://steamcommunity.com/sharedfiles/filedetails/?id=2897212014
https://www.nexusmods.com/mountandblade2bannerlord/mods/1996
One will have your companions teach each other skills, thus bringing folks up to reasonable skill levels, and the other will speed through equipping everybody. Again, only relevant if you've got an absurd number of companions to deal with.