Miku, the OG, the single most-posted anime idol on Danbooru.

Yeah... I bet 2nd is Touhou and 3rd maybe it's Fate series and those Saber clones. 4th is probably Rem that blue haired girl in maid clothes. She outclassed all other girls in her own series in her popularity like 10x times which is so unheard of. Just my wild guess. I'd like to be corrected if I don't mind, guys.

Vaccine said:

Yeah... I bet 2nd is Touhou and 3rd maybe it's Fate series and those Saber clones. 4th is probably Rem that blue haired girl in maid clothes. She outclassed all other girls in her own series in her popularity like 10x times which is so unheard of. Just my wild guess. I'd like to be corrected if I don't mind, guys.

You can list the character tags. As of August 2020:
Miku is on top.
Touhous occupy most of the top slots.
The Admiral is #10.
Sabers collectively are 13.
Akemi Homura is #18.

Wow Admiral on #10? I guess it's probably involved in ton of arts with other girls not solo. Maybe or comic pages?

What about Kancolle, Girl Frontline and Azur Lane?

Character tags by post count