Avesta got most of them spelled out, though it still leaves some stuff like "Maou" to TL's discretion. Some of them I covered in my glossary blog post, but I never got to finish it and might go back on some choices (like the aforementioned Maou should not have any inclination towards good or evil; "Overlord" sounds neutral enough while still keeping the default "evil" connotation).

Aditya is more weird, since it has a surprising amount of kanji-only terms; Kouha and Kishiki are some of the terms that would require a good look. It shouldn't be too bad as long as you stay true to the Hindu aesthetics (unlike Avesta, which has to fit many different aesthetics in a vacuum), but you still risk accidentally repeating the same term used later (like some people did with Gishiki and Varuna's Avatara).