I think those are APEX, at least :D
Yes, INVENTORY drop-down is returning some raw code instead of the correct naming conventions. That is Apex. We're working on a fix, thanks.
Bumping this long forgotten topic as with the new Rare Battle Beacon, it's shown as a "RARE Portal Powerup". Apex also still show up as a "VERY_RARE Player Powerup".
That must be one heck of a fix if it takes that long 😉