What is the occupation call?
a person who come up with slogans
a person who cuts pets hair(ex. cats, dogs...) is it a groomer or a trimmer or neither.
The first could be a copy writer, a marketer, a marketing executive, an ad(vertising) exec, and ad man, etc.
The second is a groomer. That one is easy!
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.