This is such a mess. I feel like we're at a fair, at thethe 'guess which shell the ball is under' table. Nope sorry wrong again ! But you almost had it! Nutz
You got that wrong, it was always "Nationstar Mortgage, LLC d/b/a Mr. Cooper" (without Group!!!).
d/b/a means "doing business as". Even before the WMIH merger and renaming to Mr. Cooper Group Nationstar used the brand "Mr. Cooper" (without Group), that's why d/b/a Mr. Cooper.
Here is the image I made in 2021 (based on the merger documents) originally for Az But he doesn't accept the truth up to now...