Piet Mondrian coined his own style Neoplasticism, he was an important member of De Stijl. Both of those should take prevalence over Minimalism, which was a later movement that had other protagonists (Frank Stella, Sol Lewitt). He was a minimalist, like Picasso had minimalist paintings, but neither belonged to the movement, only inspired it.
Can you accept cubism for Leger? His form of "tubism" was in fact a part of the movement. I misread the directions and was trying to fill in the painting names LOL!! Wonderful quiz!!
with Picasso ?