While Wood was technically in ELO(for the first album that nobody knows about), and it was his idea in the first place, his position in rock history first and foremost is as the leader of The Move, one of the great British bands that never caught a break in the US.
From Birmingham, not exactly Mod or psychedelic, they churned out a number of UK hit singles from 1966 to 1971, many Beatle-esque but played with a Who-like agression; they were a big influence on Cheap Trick, who covered their “California Man”(with a snippet of “Brontosaurus”). Wood pioneered adding and playing a number of classical instruments(and incorporating classical motifs)in his songs way before Jeff Lynne joined the band later on, and after a bit of dabbling in 50’s style rock, they morphed into the new identity, but disagreements once the orchestrated set-up was in place led to Wood moving on.
He then created Wizzard, which was sort of a glam mash-up of Zeppelin heaviness and Big Band.