Do you mean a standard smart lock with a combination panel? There are three of these on the official “works with smartthings” list: Yale, Schlage, and Kwikset.
https://www.smartthings.com/compatible-products
The Yale and Schlage are both very good locks, the Kwikset is a low cost option. All three go on sale occasionally since they’re from big lock makers. You’ll probably see them on sale again at Home Depot or Lowe’s for Labor Day. If you have a deal site that you follow you can probably track them as they’re all major brands.
The ones with physical push buttons are usually about 15% less than the ones with touch screens.
Any follow on Detailed discussion of different lock models (as opposed to deals) should go in the following thread: