Kadokawa publishes all the ____-Hello-series books as well as some random others (sCene, Miyabi's PB, Seasonz, etc) easily recognized from the fact that all their books have soft covers. I think it's safe to say that there's not really a difference in the photography 'style' or perceived 'raciness' between Wani Books and Kadokawa products.
That's it for the popular kids, then, huh? Yurina does seem kind of photogenic, so this could be a good one.