Dioramas refrences to maps in workshop
these are just my guesses don't get this to seriously
first - farm looks like RP Asheville
second - sb_new_worlds_2 sand world(or not i only remeber black pyramid have in some space map)
third - The Arctic Dig station in ice isle
fourth - rp_downtown_v2 (or maybe other rp map there all same)
fifth - nova prospect? don't know maybe too old map
sixth - no idea again maybe too old
sorry for text mistakes and give your guesses