MediumThinker: I am not trying to think outside the box here. I would love to say that all of the Rishonim held the beliefs that we do today. It’s just not true. What do you think the words, “D’mus D’yokno” mean? What is the Rashbam saying there in Bava Basra (and that Gemara is clearly where this Rashi is from) that an Amora shouldn’t look at Adam Harishon because then he’ll know what HKBH looks like?
Look up “Moses Taku” on Wikipedia. He lived too late, so I was wrong about the Rambam writing a letter directly against him. I will find the letter B”N where the Rambam mentions that some Gedolim from other parts of the world believed in corporeality of G-d.