I agree that your naming style is pretty well defined. The names on your list are all modern favorites, tending toward the trendy and androgynous, and most are more popular in the Mountain West and South than they are in New England.
I follow the Massachusetts names fairly closely, so here's some further information on your names:
Scarlett: #80 nationally, #80 in MA (perfect match!)
Payton: #95 nationally (#30 on the list with spellings aggregated), #172 in MA
Alexis: #26 nationally, #44 in MA
Finley: #364 nationally, #328 in MA
Savannah: #41 nationally, #59 in MA
Paisley: #195 nationally, not even appearing on MA list (fewer than 5 babies born in 2011)
Mackenzie: #135 nationally (#29 on the list with spellings aggregated), #263 in MA
Of these, I think your best bet with Reese is probably Finley. It has the same androgynous feel and is vaguely Celtic without being hyper-correct.