Many artist write and produce their own music while others just are given the song and told how to sing it. Which artist do you think has the most creative control over their music.

Beyonce. She's in control of her whole empire.

To quote the great sis Sasha Fierce:

Tell me something
Where yo boss at?
Where my ladies up in here that like to talk back?"

Bey and Gaga are the best at it.

Gaga and Queen B.

It's an only poorly educated guess, but out of those probably Lady Gaga. So my vote goes to her.

Well Gaga has never recorded a song she didn't wrote (that makes her win over Beyoncé and Rihanna) and she co-produced all of the songs in The Fame Monster and Born This Way (that makes her win over Katy).

Katy MJ Perry tbh.

So transparent OP
But Beyonce and Lady Gaga

Gaga is the only one there that I have absolutely no doubt has full creative control.

From those four it's Beyoncé.

Gaga and Beyonce, i have no doubt in my mind.

Beyonce, voted for Katy anyway.

Gaga has no creative control at all. Her name & persona was created at a marketing meeting, her label chose all of Born This Way's singles against her will, etc.

Beyonce. The one who doesn't compromise their art anymore.

Beyonce, then Gaga

WTF? You think the label decided Yoü And I to be a single? She was completely free in the BTW era.

The irony of you saying that when Katy's label makes her record remixes of her songs and use her old leftovers to make a re-issue.

This tbh. People forget that Taylor actually isn't on a major label, so she has the benefit of dealing with less bureaucracy

Beyonce....
I think she's the artist out of the four who makes what she wants happen more than the other four, Lady Gaga close behind.

Beyonce