1970 was a long time ago.....
These are exactly "old time", but...
Benny Hill and the Monty Python troupe.
Has anybody mentioned Tim Conway.
John Belushi
The Unknown Comic
Don Rickles
Steve Martin
Cheech Marin and Tommy Chong
Jerry Clower
George Carlin as long as he isn't talking about religion.
Bill Cosby's records in the 60s'.
Rodney Dangerfield
Vaughn Meader, Honorable Mention for worst luck to befall a comedian. In his 20's he produced a record, "The First Family", a super popular impersonation on the Kennedy administration. When JFK was assassinated, Lenny Bruce stated, "Vaughn Meader's had it' (paraphrase) Meader continued to work but between typecasting and his association with bad news caused the rest of his career to be a series of failures.