I saw that JSD Supply has an 80% fire control kit for Sig P320-style firearms and one coming soon for a P365. They look pretty interesting given the factory and aftermarket support for both platforms.
https://jsdsupply.com/shop/80-p320-compatible-insert-mup-1/
https://jsdsupply.com/shop/mup-247/
https://jsdsupply.com/shop/80-p320-compatible-insert-mup-1/
https://jsdsupply.com/shop/mup-247/