Guildmates who use PatchVault, side by side: level, gear, item level and professions, plus reputation and recipes from those who share everything. Which guild you are in comes from the game itself, read by the addon, and only guildmates the game's own member list confirms see anything. What they see of you is up to you, below.
The roster lists everyone in the guild, as the game's own Guild window shows them. Guildmates who use PatchVault and share are marked PatchVault; the rest come with name, rank, level and class, and from level 10 also with what Battle.net knows about them.
The Crafting tab shows who in the guild can make what, also guildmates without PatchVault. Every name opens that character's Armory page.