The dances that are suitable for boys to learn are: folk dance (Mongolian dance, Tibetan dance, etc.) or street dance.
But ballet is not recommended. Although ballet is very enhance the temperament of the type of dance. But the damage to the body is much higher than other dance categories. And there are quite strict requirements for height and shape.
For choosing a category. Each type of dance is practiced from the basics. There is not much difference.
Actually, from a mom's point of view, it's recommended that boys learn something fighting like martial arts, taekwondo, or whatever. It mainly depends on what the kid likes. Also, tuition is pretty expensive these days. Famous teachers are not necessarily good teachers. Most of them run classes just to make money. This is something that a mom must be aware of.
The child has a strong sense of music. It's best to take him to a juvenile hall or a training class to listen to the lessons. Listen to more than a few categories. The child will always choose what he wants the most.
I hope I can help you.