This article of Wikipedia divided songs into featured songs and original songs.
What is the difference between featured songs and original songs?
The Wikipedia article you link to is the List of songs recorded by Maroon 5 and it has four tables:
Original Songs - Songs composed, recorded and released by Maroon 5.
Covers - Songs recorded and released by Maroon 5, which had been previously recorded and released by some other artist.
Unreleased Songs - Songs recorded by Maroon 5 but never released.
Featured Songs - Songs recorded and released by another artist, featuring one or more members of Maroon 5 (see the last column "Featured Member").
Kara's Flowers - Songs by the band Kara's Flowers, which is what these dudes were called before they became Maroon 5.