Thanks to an awesome comic book seller, I was finally able to find the last variant of the Steven Universe comic #1 from 2014 that I didn’t have–the variant drawn by creator Rebecca Sugar!
Rebecca Sugar #1
Now I have all 10 variants (if you count the blank sketch cover one).
All Number 1s
I am still missing the Original Comic #3 (2014) George Caltsoudas variant, the Original Comic #6 (2015) Helen Yoon variant, the Original Comic #7 (2015) Helen Yoon variant, the Greg Universe Special #1 (2015) Fellipe Martins variant, and the Ongoing Comic #28 (2019) Xiao Tong Kong variant. But at least I have all the Original Comic #1’s!