Mandarin Chinese Most Frequent 1000 First Names (中国最常用的1000个名字)
I don't think there's an official account for the top 1000 most used first names. But here is an interesting statistic I've found.

In this image, it says the top 10 most used first names are:

英(ying)，华(hua)，玉(yu)，秀(xiu)，文(wen)，明(ming)，兰(lan)，金(jin)，国(guo)，春(chun). 

I think its pretty accurate tbh.