>>52583001>>52583012Honestly I'm not sure if there are many Elite 4 members that stand out that much unless you've just played the game a bunch of times.
Kanto does have Lance, though he's better known for when he's Johto's champ, and also had that one Lorelei sidequest in Gen 3. Sinnoh has Flint show up prior to the Elite 4. Kalos has the Malva on the news, but that's easy to miss.
Sun and Moon is the game where the Elite 4 are the most active as characters where they do things and you meet them before the league, but even that's just because they were all trial captains and leaders who weren't even members of the Elite 4 until the start of the game.
In that sense, S/V is fairly good, if only because generally the only characterization the Elite 4 get is whatever dialogue they have when you enter their room. The exact quality is more subjective, but at the very least they are more of a presence.