What most clients ask for is neutral American English without accent.
I can also give you
Western: cowboy
MidWest: slight or deep Ozark hillbilly
Southern: slight or genteel
Transatlantic: like old-time movies
In addition, because of my years of experience in technology, I'm at ease with technical instruction, business presentation, corporate video, white board video, and other types of explainer video. I've read a lot of it and learned how to make it interesting with my voice. If you need to make your dry tech training come alive...