Murmur, King Paimon, Duke Dantalion, Gaap and some more of the goetia. They’re are plenty more spirits and a lot of threads about this.
https://blackwitchcoven.com/demonology/demons-listed-in-order-of-how-they-can-help-you/demons-for-fame-singing-acting-celebrity/
And I believe you have to make an intorduction. Introduce Yourself To Members Of The Forum