Empathy. Understanding what causes emotional reactions and building on that rather than doing your own routine and being mad others won't agree with you.
Conservative comedians continually get "canceled" because their act only punches down and makes fun of other people, so their content only resonates with their own demographic. They lose audience because their content goes stale. There's a difference between the punchline being that the target is gay vs the punchline being what a gay person does and capturing that nuance. Adam Corolla had the same boring complaints about society, about economy cars, about not seeing enough tits, about sucking dick, over and over. Robin Williams was the full spectrum of range from Good Will Hunting to his stand up to his Genie and Doubtfire and Birdcage (separating from acting because of his amount of successful adlib).
Conservative actors only know one role: their idealized selves. I bet you they're a tough guy with no emotional range, shadowing John Wayne pretending to be a cowboy. Joe Pesci is a real NYC tough guy. That's his act, condescending tough guy. Even with his peak of comedic performance, Vinny, he was just the same character but brought hilarity by being woefully out of place for the plot. Robert De Niro was a theater kid. He makes bank as a mobster but imagine trying to watch Pesci play Captain Shakespeare in Stardust.
Conservative painters/physical media artists... I can't think of any. Maybe I'm just uninformed. Closest I can think of are some photographers that produce images I call "informational" rather than artistic. Capturing a moment in time as if the street view car just drove by, not capturing a mood or feeling.
Anyway, I wonder if the handedness is actually rooted in which kids were tormented in a strict Christian school vs who had a more explorative and welcoming upbringing. Not that people don't come out as lefties alter, but that's gotta hamper their skill-honing years for art.
I'm in manufacturing/engineering. There's no political definition for who takes the jobs, but I do believe their political leanings very closely align with their office personalities. There's the type that complains when someone takes some _liber_ties in the process, and then there's the type that sits for a minute trying to understand that alternate thought process (although usually met with the initial disapproval). There's the type that writes processes the way they think it should work, then there's the type that will convene with and cooperate with the actual affected workers before and after writing it. But at the same time, despite being rooted in science and hard evidence, compartmentalization is widely available. My household PhD is the most religious person in the office. The person is nice, smart, and competent to the point we filter our profanity around the PhD. Potentially the most creative engineer in the office (or most cocky with expenditure risk) is also one of the most obvious conservatives. Sort of like everyone must follow the social rules except for his design ideas.
The redneck engineers you're talking about are probably people who didn't get the formal education or don't have the corporate bankroll to take their work further
"Nobody wants to work anymore" is a fast track to identifying their news/political commentary sources. As if Janet in accounting dreamt of sending "month end inventory call" emails when she was a girl.
For music, I'd venture that the conservative stars are generally making their version of pop. It's not a rule itself, but a core of conservatism is following a set of existing rules because deviation is ostracized