Unbelievably all of them bar Kossoff came through John Mayall's Blues breakers as did Mick Taylor. John Mayall certainly had the knack of finding brilliant guitarists
He was definitely up there and an equal to Clapton (is God) for most music fans back then. Fame and LSD did for him. There is a very good documentary about him which I watched on a BA flight years ago.
Here is a snippet
https://www.youtube.com/watch?v=VC0DayWUY64
You may be interested in the Lindsay Buckingham/Christine McVie album
http://www.thenational.ae/arts-life/music-reviews/album-review-lindsey-buckinghamchristine-mcvie-is-an-engaging-side-project-for-fleetwood-mac-members