Ameritech, Bell Atlantic, BellSouth, NYNEX, Pacific Telesis, Southwestern Bell, US West
Each of them had a very distinct corporate identity separate from each other and from AT&T, which seems odd given they were generated from the same very stodgy corporate parent with an old and overbearing corporate identity and culture
How did each of the Regional Bell Operating Companies get their names before becoming independent? Was there a concerted effort to have significantly varying names and trademarks? Were the names and trademarks developed after becoming independent from AT&T?
About the least competitive anti-competition outcome except in respect of LD calls. Perhaps it was recognition of the public utility functions. Almost every other nation went with a national telco and so at the ITU was present as a nationstate.