Where Can I Get a Non-B Visa and Travel to Thailand Currently?

You fit number 8 on the list with your work permit, which should only be issued to you with a valid non-B and usually a visa extension and reentry permit. Unfortunately, as Robert says, the only way to get the Cert of Entry is if your local embassy issues it to you, and if they disagree in interpretation of the policy above, you have a difficult situation. They also control the passenger list for the repatriation flights, so they also need to allow you a spot on a repatriation flight. Normal commercial flights will not accept incoming passengers until the CAAT opens for arrivals.

The only way is to sign up with the Thai Embassy and follow their instructions for the Certificate of Entry and after that the needed visa, but you still need to provide all the requirements for this visa,

a Work Permit is not enough to go to Thailand,