Great post!
The list of Motown performers is phenomenal. I won’t even try to list them, because I would forget too many.
Even though they were founded in 1959, they had more #1 hits than any record label in the world in the 60's. Gordy also enforced a "conservative style" on them, until soemtime in the 70's.
Not to forget The Funk Brothers (studio band). They sold more records than any band in history - even the Beatles. Just no credit for it