I’d agree that this is a slightly eclectic list. Can you provide any insight into how you’ve prioritized these schools?
If you were starting from zero, I would advise that you visit one large school (e.g., Andover, Lawrenceville), one small school (e.g., Groton, St. George’s), one rural school (e.g., NMH, Mercersburg) and one sub-urban school (e.g., Milton, St. Marks). The advice about trying to visit 3-4 different schools that are in close proximity is also helpful if you’re trying to understand the vibe that you’d like.