No, I certainly wouldn't go that far to stop someone having a guess!
Some clues on Nos 2. and 3.:
No. 2:
He's famous, I think, for his nudes, but another painting in which everyone is clothed is 'Luncheon of the Boating Party' (1881), in which many of the subjects are real people and can be identified.
No. 3
In 1976, he embarked on a short-lived but high-profile pop career, with three Top 20 hits in the
UK Singles Chart "Reggae Like It Used To Be", "Dancing with the Captain", and "Grandma's Party", the last two of which reached the Top 10.