Names are legitimately one of the hardest things in DnD. I'm not even joking. A poor name choice for a PC can be frustrating. I remember in 4e, we had a Thri-Kreen Rogue. The player took a name off the list of example names, "Pik-ik-cha". And of course, we all called him "Pikachu". If the player had had access to more than the 14 names in the racial write-up, he might have found something better.
So, for me, lists of names are important, and you really can't have too many. Sure, there are others out there, so what? They're fun for a quick perusal, I go through a few when I'm hunting for names. I've used some online name generators, but generally prefer lists like the one in Xanathar's. The more, the merrier, I say.