Cannot create second AppleID for developer projects

The root cause of the issue is (I believe) not having a second phone number to use. I don't want to use my personal AppleID for my games and would prefer that to be my business email/AppleID for a number of reasons.

During account creation, I verify via SMS with my iPhone number and get the error for "this number cannot be used to verify at this time." I assume that's because it's in use for my personal AppleID. I tried using Google Voice to generate a number for OTP delivery but Google Voice won't let me add a new number. I tried a similar app called TextNow but that SMS gave the same error when entered.

Is there no way to make a separate 'profile' similar to Google or any recommendations on how to create a business account if you only have 1 valid phone number? I paid for the dev account back in college on my personal AppleID and now that I'm getting serious about development I'd like to separate them but don't want to buy a functioning 2nd cellular plan to do-so (ideally).

Thank you for any suggestions!