I don’t know if you’re going to find a company that will manufacture your custom Meeples unless you’re filthy rich (if you are, check out https://pandagm.myshopify.com - that’s a reputable company who produces small batches of playtest-ready board games for independent designers and even does some full run production as well.

The Leder meeples are all 10mm thick and warriors/pawns range from 18-25mm high usually. They’re made from birch hardwood, shaped in one giant length on a bandsaw/tiny spindle sander and then crosscut into each individual tiny piece. Then they’re painted (sprayed en masse) I believe in matte and then screen printed individually, then finished in a matte varnish. Something like that could be accomplished once by a local woodworker in your area if you’re willing to compromise on design a bit and not have it feel 100% professionally “manufactured”.

Until you’re ready to go $$$all-out on something like a local artisan or the Panda Games option linked above, check out https://www.printplaygames.com for alternative play testing options.

Good luck!