Multiple brands/stores in one account? Is it possible?

So I have two PL products. One we’ll say is under brand X and the other brand Y. When I first made the account I just had brand X product. Then I added another product and created a new brand Y.

But both products say “sold by X”, even the new product that is brand Y.

Will all my products in the future on this account be “sold by X”?

Can I have two or more brands and storefronts on one account? (Currently I don’t have a store page at all for either brands but interested in starting)