Ugh, wish I knew.
They've all been older indoor/outdoor or strictly outdoor cats that have had vaccines given by other clinics before us or were adult strays. Common theme is crappy record keeping- just "rabies" or "leuk" without manufacturers- I'd be shocked if they were non-adjuvanted.
I've had two right rears, a left rear, and now a right shoulder. All but the right shoulder were confirmed with histopath, I haven't taken the right shoulder one off yet but nasty looking on cytology, likely fibrosarcoma. For the right shoulder one, he's gotten distemper vax from us over the past few years, also gets Program injections with some regularity, but was first seen by us as an adult cat. The mass is higher than I generally inject- I'm anal about doing as distal as possible unless patient is trying to kill me. Even cerenia/convenia I try to go low