Vexillomantic organizations
There are numerous organizations around Survey Flags. [This list is incomplete and you can help by expanding it]

Geomantic Survey Commitee: as a commitee of the burn (unsanctioned) it is incompetent and is short on volunteers.
Royal Geomantic Society: Pomp and Circumstance, titles on titles. Byzantine lore forgets Flags exist. Several societies claim to be "the" RGS.
Order of the Golden FLAG: a secret society that lost track of own conspiracies and doesn't realize it because of all the secrets.
God Hates Flags: Iconoclastic. Fundamentalists. Uses Staples instead of Nails.
IVG (International Vexillomancer's Guild): Literally the government.
Vexillians: The first Vexillomantic religious movement. Spreads problematic catmas about the nature of reality and spends most of their time staring at Flags.