Minis for Chainmail?

Advice Needed

Hi folks. Long time TTRPG player here. New to war gaming as in want to bring some chainmail combat into my Od&d game. So I need some minis.

I’m looking for advice on bulk armies to pick up in 10mm or 15mm scale. I am looking for knights, base militia, and Viking/raider style armies to start. Any suggestions are welcome! Thanks!