Two that stand out for me.
Karen Carpenters Ticket to ride is streets ahead of the Beatles version.
And the Pinky and Perky version of Rainbow Valley is better than Lovin' Spoonful's version.
Don't you mean Love Affair's version? "Rainbow Valley" is not the sort of song the Spoonful would have ever recorded, and Lovin' Spoonful songs are not the sort that Pinky and Perky would have ever covered.