Which sourcebooks can be used as the additional resource for AL PHB+1?

Question

The Adventurers League Players Guide for Season 9 explains PHB+1 as follows:

Forgotten Realms characters can choose race and class options from the Player’s Handbook and one other resource—a rule called “PHB+1.” Additional resources include the following products:

• Elemental Evil Player’s Companion (EEPC)

• Sword Coast Adventurer’s Guide (SCAG)

• Volo’s Guide to Monsters (VGM)

• Xanathar’s Guide to Everything (XGE)1

• Mordenkainen’s Tome of Foes (ToF)2

• Locathah Rising(LR)*

Is "include" as used here intended to mean "are limited to", or are these resources simply listed as examples of sourcebooks that may be used?

*: Locathah Rising is listed in v. 9.2 of the ALPG that I have on my computer. I don't remember how I obtained it. The linked PDF is version 9.0 and does not list this resource.

Answer 1

The list is exhaustive

While the wording introducing the list might have some ambiguity, the note below which excludes some options is pretty clear:

NOTE: Races with flight at 1st level, and options from any resource other than those listed above aren’t available without specific campaign documentation (i.e., certs, etc.).

— AL Players Guide v9.2

That list is exhaustive as no other source is allowed unless something else explicitly lets you use that option. (Note that the Eberron campaign does not use the PHB+1 rule)