The phrase "a compilation of almost" is correct and usable in written English.
It can be used when referring to a collection or gathering of items, information, or data that is nearly complete or includes nearly all relevant elements.
Example: "The report is a compilation of almost all the research conducted over the past decade."
Alternatives: "a collection of nearly" or "an assortment of almost".
300 BCE - Kautilya, also called Chanakya or Vishnugupta (flourished 300 bce) Hindu statesman and philosopher who wrote a classic treatise on polity, Artha-shastra ("The Science of Material Gain"), a compilation of almost everything that had been written in India up to his time regarding artha (property, economics, or material success).
The Final Fantasy Tactics Advance Original Soundtrack, a compilation of almost all of the music in the game, was released by DigiCube in 2003.
The Final Fantasy IV Original Sound Version, a compilation of almost all of the music in the game, was released by Square Co./NTT Publishing, and subsequently re-released by NTT Publishing.
The Final Fantasy XI Original Soundtrack, a compilation of almost all of the music in the game, was released by DigiCube in 2002, and subsequently re-released by Square Enix in 2004.
The Final Fantasy Tactics Original Soundtrack, a compilation of almost all of the music in the game, was released by DigiCube in 1997, and re-released by Square Enix in 2006.
All Sounds of Final Fantasy III, a compilation of almost all of the music in the games, was released by DataM/Polystar in 1989, and subsequently re-released by NTT Publishing in 1994.
Officials said that the report was a compilation of about 400 pages of data, and that it contained almost no analysis.
Final Fantasy III Original Sound Version, a compilation album of almost all of the music in the game, was released by Square/NTT Publishing in 1991, and subsequently re-released by NTT Publishing in 1994 and 2004.
He sought to contrast the Lib Dems' approach with that of the two main parties, who had "managed to produce a greatest hits compilation of almost everything that has turned people off politics".
ROLLING STONE: The Illustrated Portraits (Chronicle, $40) is a compilation of more than 200 illustrations by almost 100 artists from 30 years of the magazine's history.
