Spookies from 1986 comes to my mind.
Spookies had three DVD releases in the UK. They don't appear to be ports from VHS/Tape masters, but are presented in full screen. I believe Spookies was a European co-production and most likely the reason the UK got a DVD release. Legal rights might prevent a US release, or the owner just doesn't care, is asking for too much money or original elements are lost. It's always one of those.