I cannot read kanji, so I cannot point you to an official site. However, retail chain Akachan Honpo conducted a survey of 18,617 boys and 18,199 girls born between January 1 and October 20, 2020.
https://www.nippon.com/en/japan-data/h00872/
The top names in kanji were 蓮 (Ren) for boys and 陽葵 (Himari) for girls. In the most popular readings ranking Haruto came first for boys and Honoka top for girls.