Separate Ringtone for Work and Personal Phone eSIM Lines

@AnnieL2 Thank you for trying to answer my question. This is not helpful because I didn't ask for information about assigning ringtones to CONTACTS. My request is to assign distinctive ringtone to the BUSINESS line (eSIM business phone number) to allow one to distinguish a business call from a PERSONAL or PRIVATE caller. The method you are offering may play a specific ringtone for someone I already know, but I need to recognize a business inbound call from a number I don't recognize in my contacts. It's by PHONE LINE and not contact that I need to make the distinction or it's really of no use in this context. Please let me know if this clarifies my request?