Intrigued by the fact that many Bibliogram/Nitter/Invidious/Piped instances are from sites that also offer other services, I set out with good will to sift through them one by one, and here are the results: (and I must say I discovered many instances that are not indexed on the “official” directories).
Obviously if I missed any I will point them out and add them.
Nonetheless, many instances in my research aren’t listed in the source you linked 🤔
@Edo_Secco
This list is made by scraping the official list of instances for each project, so any instances not on the official lists will not be here.