Yes, the "family trees" do make fascinating reading. There's a big overlap with ELO and other Brumbeat bands in the Moodies' tree - Pete Frame did a good book setting all these out - and a fantastic TV programme was also made on this. I've put together a comprehensive one just for the Moodies & their many connected bands ( and correcting some of Peter's work). You may recognise some of the names ;
https://www.themoodyblues.co.uk/page110.htm
Tony
https://www.themoodyblues.co.uk/page110.htm
Tony