Dan Kelly was a great one. Being in Pittsburgh I am sort of partial to Mike Lange.
Lange has lost a step or two in recent years, but at his peak he was really, really good.
Could hold your interest on the radio, basically working along (including between periods)
all while calling games for what at the time was a really bad team.
Aside from his brief stint in Pittsburgh, Joe Starkey has a long association with Bay Area sports...and 'What a bonanza!' has been his trademark catch phrase. Starkey still does Cal Bears football, and previously did the 49ers for many years, as well as the Oakland Seals and San Jose Sharks (in the early years of both NHL franchises). I believe he left the Bay Area for Pittsburgh because the Seals did not always have a radio contract. He returned to the Bay Area in 1975, when he started working for KGO-AM, and calling Cal football and basketball(a sport he called until the early '90s).Have to admit I don't really remember that "What a Bonanza" call.
Makes me think it was probably a short-timer like Doug McLeod (current TV voice of the University of Minnesota Golden Gophers) or Jim Forney. For a time Joe Starkey did radio (perhaps best known for his call of the Marching Band on the Field play in the Cal-Stanford game).
The absolute WORST Pens announcer was former Pirates announcer Bob Prince. He was clueless.
Dan Kelly (St. Louis Blues), Lloyd Pettit (Chicago Blackhawks), Pat Foley (also Blackhawks).
How about Chuck Kaiton from the Hartford Whalers/Carolina Hurricanes? Always used to enjoy his radio calls here on WTIC-AM 1080 of Hartford.
Jiggs McDonald also comes to mind. One announcer I could never tolerate was Foster Hewitt.
Lloyd Pettit ("and a GOAL!") was indeed great. I noticed, however, that you didn't mention Jim West
I forgot about West. I remember him doing Cubs games with Jack Brickhouse in the mid 1970s (Pettit was also in the WGN-TV booth with Brickhouse, in the 1960s), but not hockey.
Chuck Kaiton (Hurricanes radio guy) and Joe Benanati (Caps TV guy) for local announcers & Doc Emerick and Jim Hughson for national announcers.