A few corrections:
I don't think there was any indication that Iggdra and Nara are mother and daughter. Also, Iggdra is just 29 and Nara 23, so rather unlikely. If I'm not mistaken, Nara's father was a son of the grandfather. Nara is therefore the cousin of MC and Mia.
The MC above should be "Grandfather", if I'm not mistaken his name was Peter.
Eva is not the mother of Laurie. Eva is more of a stepmother. Consequently, Beth and Laurie are half siblings.
MC and Mia are merely half-siblings, if I'm not mistaken:
Beth had a liaison with MC's father, grandfather made him disappear, Beth ran away and later remarried. From this connection Mia was born in a few timelines.
People you missed:
Noire, the hacker aka the girl from the train: she mentions that grandfather was her biological father, therefore she is the aunt of MC, Mia and Nara. And she's also the great aunt of her friend Liv, so to speak.
Venari, the Vana: It turns out that her mother had a brief affair with a non-Vana. So there's some evidence that she's either an aunt or cousin of our protagonist.
As for Lilibeth: I don't think there's been any indication that she's related to MC and the rest of the family, but at the same time I wouldn't be surprised if she were, especially considering what Grandfather did with the amulet.
Other than that, grandfather's sisters are still missing from the family tree; while we can probably assume that his mother and unkind sister are no longer alive, at least his kind sister is apparently still alive, and was in a coma until the end of the update, during which she apparently barely aged.