In general, English is spoken on ATC frequencies around the world.
The ATC English in MSFS is pseudo-American. Americans don’t say “decimal”. They say “point”. I would love for it to be “point” where people say “point” and “decimal” where people say “decimal”.
I would also love to hear accents. And female controllers, too. And not just one voice but a variety of voices so when you go from ground to tower to departure to center to approach to tower to ground, you keep hearing different voices, just as in the real world.