Dr. Johnny Fever - Hawkeye Pierce
Venus Flytrap - Trapper McIntyre (both even have TRAP in their names)
Arthur Carlson - Henry Blake (their demeanors and personalities seemed similar)
Jennifer - Hot Lips Houlihan
Herb Tarleck - Frank Burns
Bailey - Radar
Andy Travis - Klinger
Les Nessman - Mulcahy

I can see it through about five names. WKRP creator Hugh Wilson said most of the characters were people he knew from radio and advertising.

I think there's a lot of similarities between military and workplace shows, so you could expect some similar characters.