Welcome to the board, WorktoQuilt
This is an old post (from 2016), but if you look at comment #18 on page 1, the original poster (bernamom) has answered this question:
She said she doesn't know the name of the pattern, but she used a jelly roll and 1 1/2" strips.
I believe the pattern is sometimes called stained glass. Similar to some of these:
https://www.google.com/search?q=stai...3iaD6_ZGoL0KNM