Rising to the #3 position, the Forrest Gump Soundtrack is made up of, except for the Forrest Gump Suite, entirely non-original songs. The movie covers 30 years of Forrest Gump's life, from 1951 to 1981, and the songs were chosen to evoke different periods of American history that compliment the on-screen action.
If you click on any of the various online music providers linked at the top of this post, you'll find that none of the links go to full and complete albums. For likely dumb licensing reasons the streaming albums are missing songs. It's dumb because most, if not all, the songs are already available on the streaming platforms, but just in other albums. For example, here is a playlist a user on Tidal made that looks to have all the songs in the movie (although the order looks to be a bit off). Furthermore, you can still buy the soundtrack on physical media (*) which indicates that the licensing agreements are still active.
I have seen the movie and I find it entertaining, and in particular, I think the music helps frame the different periods in American history Forrest Gump experiences quite well.
The album itself is a good collection of American music spanning the 30 year time frame of the movie. Most are genuine hits and there's no filler or pointless covers unlike other soundtracks I've reviewed before. Of all the soundtracks I've reviewed so far, this is by far the best. The only proviso to the album is that on its own, e.g. if the movie never existed, because the songs cover such a wide range of Americana, they are a bit scattered thematically. But as a way to recall the movie, if you want to do that, it works well.
(*) At the time of this writing, you can buy a cassette tape version for nearly $90! Compared to the $14.48 CD version, which is better in nearly every respect, that's quite a premium.