This article explains how the artist roles work in Spotify
Which equivalence does it have with the metadata we specify in our platform?
The artist roles that Spotify currently publishes on the main page are just two: "Primary Artist" and "Featuring Artist".
So, from now on, if you assign an artist as "With" or "Featuring", in Spotify it will be published as "Featuring Artist" indistinctly.
All other assigned roles than those listed above will not appear in the album information published in Spotify. However, the listeners can access certain information by clicking on the ellipsis next to the track title:
As Spotify users, when we click on a song > "Show credits", it shows to us additional information.