By 'research', I'm mostly referring to my own digging up information. I was sceptical about this AvidExpert guy and his claims of having a source from Capcom, most of the stuff he does (from what I can see) is literally theory mongering.
AvidExpert to my knowledge is nothing more than a liar.
I'ma throw in this since you could say I'm a partial catalyst, the original mention of 'Camille' is from someone named AvidExpert on Reddit and YouTube, he claims to be in contact with someone from Capcom providing him this information yet has never actually provided anything to suggest it's genuine, when a moderator for the RE subreddit was asked as Avid wanted a moderator to look at it, he said it's possible it's genuine but wasn't entirely convinced.
His overall attitude to being called out on the lack of evidence to prove these leaks is something to consider, he's constantly stressing the fact someone's work contract is at risk yet it's somewhat hypocritical if these leaks are genuine as this person could easily be found out and be fired due to Avid's videos. There was something else regarding Mia and a leaked image of her, he mentioned it was stolen from him and was called out by other redditors and even ShadowLeggy herself.
tl;dr, backing up points while also mentioning my own research on Camille.