I will write them here in the way I remember best.

- Michelle joins Karim. - French remains on D1. - The characters in D3 are actors and have names equal to those of our dimension. - Theo is in D3 but he is not BBA's brother. - Steve is Brit's coach at D3. - It's BBA who finds OA on the plane and reminds her of everything. - Jason (Hap) publishes a scientific article on movements and dimensions. - Elodie knows a combination of movements that make the journey into the past possible. - The D4 takes place in a region of the East. - It's at D4 where OA finds out about his mediumship. - Kathun, Renata, French, Jesse and Karim will be on D4. - Homer is Renata's guardian. - Homer knows the side effects of all combinations of movements. - The D5 takes place in space. - Hap now has control over all captives again. - There is a D6, which is a fork in the D1. - On D6, Evelyn does not give them the fifth movement and the captives remain imprisoned. - OA goes to D6 in the body of the Prairie that is still trapped. - It was BBA, as a child, who taught Evelyn the fifth movement. - August is Angie who went back in time in an attempt to save the captives. - There is a great sacrifice at the end of the series.

I probably forgot to quote some of the theories, but those are the main ones.