Coaches, be boring.
Spend the time to know-really know-what you care about, what your language is, what the standards are…what’s this thing all about?
If you have a simple set of terms that work for you on and off the field, a glossary that everyone knows, it doesn’t matter if people have a variety of accents.
Coaches who say the same thing over and over, in a language that people understand are not boring, they are consistent and easy to play for.
And they often win.