I wondered if a single person can have multiple accounts to sell assets for 2D, 3D , different styles so they would not mix up in a single profile ?
Why would you want to separate them by account? You split your visibililty into obscurity this way.
If someone does not visit your profile, it does not matter how many accounts or projects you have. They found the project and not you.
And if they do visit your page you can organize your page. Try putting items in collections according to topics. I do not know exactly how this works, but I have seen such creator pages.