Pretty much any vendor selling commercial appliances. SpeedQueen even gives you the choice of the old school mechanical controls. I don't know if they even have any smart consumer devices. They can be a bit more expensive but rarely break from household use.
For smaller non-appliance stuff there's CloudFree [1] which sells products from other vendors that can be reflashed with ESPHome (no affiliation, just a happy customer).
[1] https://cloudfree.shop/