I'm not a scholar (maybe if I knew Japanese...) and don't have every interview Kajiura ever did saved (I have some) but:
For newer shite:
https://fictionjunction.com/information/11421
https://www.nhk.jp/p/anison-ac/rs/Q3PKWJX562/episode/re/N7X5Z97GLR/
If you can hunt down this radio show, that's pretty much all Kajiura talking about her musical journey, starting from inspirations (they play The Beatles' "Penny Lane" and, coincidentally, ABBA's "Happy New Year", lul).
For older shite:
If you can hunt down Masami Okui's @Tunes. program with FJY as a guest ?from 2006-11-17?, it has a "Roots Tunes" segment with Kajiura talking about Cocteau Twins's "Treasure" album and Yuuka talking a tiny bit about Bobby Caldwell.
