Anyone familiar with type 1 uterine lining for transfer??

I am 33, w/ multiple infertility issues. After undergoing 4 rounds of IVF, we have 3 healthy embryos. That being said, I have a Hx of hyperplasia & my MD recently told me my type 1 uterine lining "isn't ideal". She might not even call it a type 1. I understand type 1 seems to be the most optimal lining for a successful transfer/implantation, but hoping to hear success stories from anyone w a similar situation/ successful pregnancy with a type 3 lining etc. pls let me know, thanks so much!!