Starting solids tomorrow!!

Any recommendations on what to start with? I wanted to start with a fruit or a vegetable but I remember the pediatrician saying try not doing the sweet stuff first..

We were thinking about broccoli but I didn’t want it to be boring. We wanna possibly do sweet potato or banana or maybe even avocado but I don’t want anything that could be rough on her stomach either.. and we were planning to purée whatever we chose. Thank you!