What do you guys do to get vocals to sound full and wide in a track? I can get them to cut in mixes and mesh with other elements, but I can't get them to have a wide, """fat""" (for lack of a better term) sound. What do you guys do to vocals to get them to sound the way you want them?

For some examples of what I mean by a full and wide vocal, here are a few examples:

Cinders by LuQuS: https://www.youtube.com/watch?v=2Wm_848c96g

Lontalius - Comfortable (Subranger Remix):
Singularity - Horizon ft. Nilu (DCarls Remix):

Flores - Afterglow: https://www.youtube.com/watch?v=HCYMqyDn1LE

I know these songs are all pretty different from each other, but something they all have in common is the vocal processing makes it sound wide and full and it is done in such a way that it harmonizes with the track perfectly. Any help would be greatly appreciated and so would just hearing about how you go about vocal processing in general!