Unfortunately blocking all unknown calls is the only way to sanity. Otherwise we're talking 6-9 calls coming in ALL DAY, EVERY DAY.

The calls are coming from new numbers, across multiple area codes. A few months ago I would have advised using Begone (https://apps.apple.com/us/app/begone-spam-call-blocker/id159...) to block but that only worked since these calls were isolated to blocks of area codes that were pretty safe to block like 888-XXX-XXXX, but now ZERO of these calls are using a fixed area code that would be relative safe to block.