I know better than Harvard
Western Core: long-standing membership in a formal military alliance or neutrals nonetheless closely aligned, comparable levels of economic development and liberal democratic systems, perceptions of common or similar identities, cultures, institutions and long historical associations
Western Periphery: newer additions to the core military alliance and/or economic community or otherwise having strong ties to the Western Core but some other thing prevents closer integration (too new, too poor, too brown, too Muslim, too illiberal, not integrated enough), but with potential to graduate to Western Core in the future
Westernised Outliers: economic development comparable to the Western Core and having adopted many Western-style institutions but not part of the West proper for ethnocultural and/or cultural reasons and unlikely to become so.
Undergoing Westernisation: existing historical or cultural connections to the West and pursuing integration into the Western military alliance and/or economic community, adopting Western-style institutions and so on.
Undergoing
De-Westernisation: may be considered part of the Western Core or Periphery or could be undergoing Westernisation due to historical or ethnocultural reasons, but detaching themselves from the Western political and economic project and/or culturally, promoting an identity in opposition or as an alternative to the West.
Good luck with that ambitious itinerary! It should be fun.
