I have this problem too. I wish I could "follow" npubs into multiple different lists, but as far as I can tell Amethyst doesn't do this yet. Do any other clients?
You have to hand-curate your lists on listr.lol or similar, and then they show up in Amethyst and other clients as a drop-down box over the feed or whatever. Where "following" is. Following is also just a special list, after all.
What I'm suggesting, is that the profile creator can express the differentation clearly, of their own volition. To allow for a different use case (filtering/categorization). That allows for them to have a Lyn Alden 🤖 npub19taxhhc7a7xs60ct6gh26sdhnaqcdq84zzcmaduqvzgqrjqct4dsat7eyn and a Lyn Alden 👩 npub1a2cww4kn9wqte4ry70vyfwqyqvpswksna27rtxd8vty6c74era8sdcw83a
nostur fixes this w/ custom feeds, its like lists on twitter, you can put npubs in custom lists youll see their posts and you dont even have to follow them, best thing is nobody else can see your feeds (stays in your device/s) tied to your icloud