A. For some reason I could not download your pictures but I have a pretty good idea what ash trees look like. In the early years of ash tree I would let them go and not prune them unless these were branches that were crossing, going down, too close together and the like... problem branches. Otherwise let them go and let it grow into its natural form.
|Basic limb structure of ash tree in summer and winter.|
These are not the readers trees but a much older trees.