Interest Stacks

Fun stats: Gintama has the most entries for a single series with 10 that have cracked the top 10. That's every main installment of the series except the Love Incense arc and Semi-Final, which were both just short OVA series to adapt a few leftover chapters of the manga.

Madhouse and Sunrise/Bandai Namco Pictures (I'm counting them as the same since they're basically the same studio under a different name) are tied for most entries of any studio on this list with 14 each. In distant second is a three way tie between Kyoto Animation, Bones and Studio Ghibli, each with 5.

There's yet to be a Josei anime to reach the top 10, however the closest one ever got was Descending Stories: Showa Genroku Rakugo Shinju, with a score of 8.95 at #16 at its peak.

In 2017, a total of 17 titles had a score of a 9.00 or higher at the same time.

Of the 88 anime that have been in the top 10, only 17 have a corresponding source material in the top 10 manga (which you can check out below ;)), and that's including One Piece Movie 4 which doesn't actually adapt anything from the One Piece manga or light novels. Also worth noting that of those 17, none of them are from beyond 2012, or the second part of this list. The last anime in the Top 10 to adapt a manga (or light novel in this case) from that Top 10 was season 2 of Fate/Zero.

Part 1: https://myanimelist.net/stacks/35061
Manga: https://myanimelist.net/stacks/34596
For anime in the Top 20 Most Popular: https://myanimelist.net/stacks/41787