If you're trying to make lawn/field/pasture:
CTL or track loader with rake grapple for 1 machine solution. Or mini with a rake/thumb to bunch trees and a CTL with a grapple to move wood main pile.
If you can leave the stumps:
CTL with shear to bunch trees, grapple to move the cut trees. If dealing with larger trees a 3ph winch or a dozer and log chain will handle anything a CTL shear will cut.