basic Tstats do not argue. Suggest Radio Thermostat CT100/Zwave or CT50/Wifi has good support in ST, not supercheap or basic but less than $100 each. I think CT50 has the advantage of independent remote management - when you see all 3 Tstats in the native phone app, I bet most people like it pretty good uh-huh.
see
Filtrete 3M-50 is the same as RT CT50, and this devicetype also works with RT CT80, you just don’t get remote humidity.
Zwave probly ok as-is, or plug-in extender.
use a mechanical strap-on Tstat instead, and monitor it with Zwave sensor if you want. It is pointlessly complicated to require your Zwave to operate your temperature safety control.