For now, it's not it's own category, but All Chaos Emeralds is all I run. So, you should still run it if you'd like!
As someone who runs Sonic alone, I'm glad it's being separated from Sonic + Tails. But, as someone who prefers to only run all Chaos Emeralds, I'm sad and confused as to why it doesn't have it's on category. I mean, I understand that most people only care about any% for now, but I feel like later down the line of the game, most people are going to flock to All Chaos Emeralds. When the game gets older and any% gets more optimised, I think many people will agree that all chaos emeralds is more entertaining. Wish it would be it's on category now, but there's nothing I can do about it. Still going to run it, as any% really doesn't interest me.
Lastly, I just want to say that I would very much like IL leaderboards. I think this game definitely needs them.