Also I like to call this music “orchestral lounge”, as directly following the “orchestral beat” music from a few years earlier. Orchestral lounge is more romantic, jazz and classical, while orchestral beat has a more Anglo style with hammond organ and surf guitars. I wouldn’t say it is Erotica music necessarily, as it was used in some crime, westerns or comedy films, even though, yes, it is most commonly associated with Giallo and Sexy films.
Interestingly, I think orchestral lounge has a relatively strong connection with Brazil. The post-bossa and post-samba orchestral pop music of Brazil in the 1970s is quite similar to the Italian music of the same period. I mean Ennio Morricone even arranged an album by Chico Buarque in 1971.