I had a data scientist colleague who did something like this and they were a data engineer. A friend also got shoved into such a role and was in charge of all the data in the company. They tried to create a new team under him for the same pay and he told them to shove it.
Be strong, you might have the cards in your hand here. Ask for a raise and of you want it, a team. You might say you're done, but trust me, the job is never over. There will always be more.
Good luck.