Yes, those people also have or had talent - and as a side note, Karen Carpenter is grossly under appreciated, like hugely so. Her voice is so pure and clear, and I think it's because of the music she sung. She was also a really great drummer, and she considered herself a drummer first, and a singer second.
A singer with great range and control would be Whitney Houston. You won't see Nicks covering her songs, either.
A singer with natural talent is Karen Carpenter. She had little training, yet became a much loved singer.