that site posted a following article regarding the projects using zk mining now
check the link below:https://minernav.com/mining-technology/aleo-and-ironfish-projects-already-using-zk-mining/

however, looks like these projects are not officially launched yet, may still wait for couple time.
besides that, you can check Paradigm's main page for more related zk mining hardware information.

i might go ERGO first now and hold since it uses less energy.