Kasumi is harder. though one could argue that Japan being an island chain is associated with water. the name itself also means ‘Mist’. though, having ran a scion campaign for years now, I’d associate her more with Susano-O than Poseidon.

Catherin? yeah, drawing a blank there.

That only explains Cait and Taryn. IIRC none of the girls really knew each other before they became pregnant, least of all Kasumi, so how are the other three connected in this theory?

Go back and re-read what Cat just said in the last panel. I thought that was pretty self-explanatory myself.

However, IMNSHO, there’s no such thing as coincidences.