Brazil is +5h from California. That's the same as the difference between New York and London. Workable for a couple of hours out of every day, but hardly "similar timezones".
My employer keeps hiring more argentinos. It’s a few notches better than India IMO but is not without challenges. It’s still a few hours time difference and the language issues remain. Giving them well capsulated or boilerplate work seems like a slam dunk but if it’s code that we need to work with as well then it sucks.