Tamales are definitely had in Guatemala but they're very different. Theirs is made in banana leaf instead of corn husk which, in part, gives the tamale a completely different texture:
They also use different filling and spices.
They do use corn husks though for another kind of tamales that are tiny ones called chuchitos and wrapped kind of candy wrapper style. I guess you can pretend the ones I made are chuchitos since they're corn husk yellow too haha.
I've tried the banana leaf ones and they taste different from Mexican tamales, but they're still sooo good. Most latin american countries have their own take on the same concept.