What are the two types of glia cells involved in the myelination of a neuron?

Microglia and Macroglia

In layman terms:

Micro Glia cells are a small percentage of the glia in general about 10-15% or so. They are free roving within the brain and spinal column and seem to have a function in repairing damage. Glia cells percentage increases when neural damage is present.

There are many sub-types of Macroglia cells. It would not be off to label the different types as cells comprising parts of the infrastructure of various defined objects in the brain and other neural tissue.