FGTR sounded more like the Bee Gees than anything Genesis did post-Gabriel.
Some of the post-Gabriel Genesis pop stuff also had a disco-ish bent like the later Bee Gees, although closer to “new wave” or “new romantic” sound. I like the inventiveness of the prog-rock Genesis whether during the Gabriel era or after. Of course, nowadays Gabriel has shown himself to be Genesis’ equivalent of Roger Waters, with respect to Israel.