#plus there are also the clytemnestra kids like erigone helen and aletes too

[hermesmoly]

do you consider iphanassia, daughter of agamemnon and clytemnestra, canon?

Nope but also yes (in a way).

I like the configuration of Electra being called "Laodice" (by Homer) and Iphigenia "Iphanassia" (since she has a myth of dying the exact same way Iphigenia did) respectively.

Though I do acknowledge Sophocles saying she's different from Iphigenia, but she's not a character in the play she's referenced in, and the alive AgaCly kids (Orestes, Chyrsothemis, Electra) feel more consistent as a trio.