The Blue Max

As there have already been some "samplers" of not dedicated score compositions listed, let me add some:

Moulin Rouge
Cruel Intentions
Blues Brothers
Das Boot
O Brother, Where Art Thou?

Even though I'd consider MR and BB a bit of a stretch, as those are more or less Musicals - more like a movie made around the soundtrack, than a score collected or composed to support a movie.

There are plenty of others like the various Disney Animation movies, with soundtracks by Phil Collins or Elton John, etc...

The electronic score for Das Boot is really good. In fact wasn’t the main theme song turned into a kind of techno song which became a big hit in West Germany?

As a teen I was somewhat unusual in preferring movie soundtracks to the pop music of the time (exceptions of course). Most of the main ones are already listed, John Williams basically couldn't write a bad score throughout the 80s and his stuff is worth listening to outside of the main themes, especially Raiders, Close Encounters, Empire Strikes back etc.
Vangelis had a short but highly successful run with both Chariots Of Fire and Blade Runner.
Goldsmith was another favourite of mine, from the sublime Alien to the eerie Poltergeist and others.

But I'd like to nominate perhaps the only (to me) acceptable musical movie's soundtrack, that of The Blues Brothers.
To me The Blues Brothers is perhaps the very definition of lightening in a bottle, that movie, or anything like it, cannot be made again. All those classic performers were captured at the end of incredibly illustrious careers with massive amounts of meaningful work behind them, in a genre they invented or sculpted. I mean, you could try it with hip-hop, but I already know what I think about that

Also, special shout-out to One Flew Over The Cuckoo's Nest.

I’m surprised I’ve not seen The Good,the Bad, and the Ugly.

Indeed, in 1991, by a DJ-Project called U-96, 13 weeks #1 in Germany, as well as reaching #1 in Norway, Austria, Switzerland, and Israel... Das Boot (Techno version) Probably one of the more ("mainstream") successful techno songs.

Even though I would not consider Das Boot by Klaus Doldinger to be an electronic score - sounds mostly classic orchestration to me Das Boot OST Playlist

I was going to list all the Spaghetti Westerns, even some not so well known such as Duck, You Sucker! (not technically a western) and the Trinity series but just opted to mention the great man himself.

Agree 100% with DM’s assessment of “Blues Brothers”. Everything about that film simply worked and the cast chemistry was indeed lightning in a bottle. I also had no clue who Cab Calloway was before I saw the film so that was a nice discovery for me.

I had meant to mention Ennio Morricone as my favourite film score composer, but forgot :/ IMO his score for Once Upon A Time In The West is his best, followed by Once Upon A Time In America. TGTB&TU is pretty good too. I especially like Ecstasy Of Gold as a musical piece.

You can find some old B&W footage of Cab Calloway on Youtube performing Minnie The Moocher from way back in the 40s or something. Pretty much the exact same performance

We have the Jason Bourne theme in the car, good for action sequences on the highway.