Thoughts on Keir Eagan & Lumon history

Just some thoughts that I'd like people to maybe add to or expand upon. I've been thinking about Keir Eagan and his voice recordings as heard in S1. A lot of the material sounds a lot like self help type books (taming tempers etc) which makes me want to draw a parallel between Keir and Ricken. It's also worth mentioning that Ricken was approached by Lumon to write some new material for the innies to read on the severed floor.

Is it not possible that Keir Eagan never actually intended for Lumon to become a cult/religion and was more interested in general self help? Also, bare in mind that we don't actually know what was written by Keir and what has subsequently been made up by Lumon after his death - which is why I mention Ricken.

In the In Perpetuity episode, it is mentioned that Ambrose Eagan (Keir's son and second CEO of Lumon) was "the black sheep" of the family. Ambrose's sister, Myrtle Eagan is the third CEO after Ambrose. not only did she set up the Myrtle Eagan school for girls (a place that by all accounts is incredibly abusive and solely in service of Lumon as a company) but she is the only mannequin to wear red in the perpetuity wing. If someone knows more about the colour coding that's happening within the show they might be able to extrapolate on this.

Given all this though, I get the feeling that the mastermind of Lumon may in fact be Myrtle Eagan, not Keir. It seems to be implied that she usurped her brother to become the CEO (potentially she was the one to create the black sheep narrative) and that she potentially used or misinterpreted her father's writings for her own ends.

What do you think?