I only list the beast under a colour once I've confirmed it's still that colour in the current build. I then only mark them as tameable if confirmed in the current build.
TLDR: plain cobalt hasn't been found yet. Jade may be unavailable (not sure if Beast of Jade will be made untameable).
Firstly, what I haven't even seen yet, that I know about (probably many more that I don't know about):
- Granite Quilen (id. 65816, there are two others), not sure if this one is used at all
- Stonebound Watcher (id. 63600) - a different ID of this mob. 63605 is tameable, but I'm not even sure where this one is located - maybe it's the ID of the inactive ones?
- Stone Quilen (Mogu'shan Vaults)
- Enormous Stone Quilen (Mogu'shan Vaults)
- Frenzied Stone Quilen (maybe also Mogu'shan Vaults???)
- Jade Quilen, (only one off the id. of the one in Mogu'shan Palace, so maybe also there??)
- Quilen Statuette, (apparently summoned by Quilen Statuette archaeology artifact)
- Reanimated Quilen (VEB, maybe phased or quest related)
- Spectral Guardian (summoned during a quest in DW, I think. Transparent, possibly undead)
And now for what I've at least confirmed colours for:
Organic:
- Bronze Quilen, Townlong Steppes, TAMEABLE
- Mu'Shiba, Mogu'shan Palace, NOT TAMEABLE, GIVES ALREADY CONTROLLED ERROR
- Gurthan Iron Maw, Mogu'shan Palace (two colours), TAMEABLE
- Gurthan Quilen, Mogu'shan Palace (two colours), UNTAMEABLE (cannot be aggroed)
- Quilen Guardian, Mogu'shan Palace, TAMEABLE
- Quilen Watcher, Crypt of Forgotten Kings (scenario), TAMEABLE
- Stonebound Quilen & Stonebound Quilen, Vale of Eternal Blossoms (on days when daily "Stonebound Killers" is available), (two NPC ids, both tameable. 63950 wandering, 64186 are attacking villagers), TAMEABLE
- Yao, Kun-Lai Summit (requires someone with quest to summon), TAMEABLE
- Terracotta Guardian, Kun-Lai Summit, TAMEABLE BUT CAN BE BUGGY: if you tame it while it's a statue it's fine, but if you tame it while it's flesh, it permanently becomes a useless statue!
- Gasaran, Vale of Eternal Blossoms (activated in once-off quest "Battle Spear of the Thunder King" which you get at Revered with The Golden Lotus), TAMEABLE
- Dagou, Vale of Eternal Blossoms (in Guo-Lai Halls area, initiate combat with Zhao-Jin to activate), TAMEABLE BUT PHASED OUT AND INACCESSIBLE AFTER INITIAL VEB QUEST CHAIN
- Gurthan Iron Maw, Mogu'shan Palace (two colours), TAMEABLE
- Gurthan Quilen, Mogu'shan Palace (two colours), UNTAMEABLE (cannot be aggroed)
- Yachi, Kun-Lai Summit (requires someone with quest to summon), TAMEABLE
- Quilen Statue, Crypt of Forgotten Kings (scenario), TAMEABLE
- Terracotta Defender, Kun-Lai Summit, (requires someone with quest to activate), TAMEABLE
- None
- Beast of Jade, Greenstone Village Scenario (possible random boss for Phase 2), TAMEABLE
- Granite Fragment, Vale of Eternal Blossoms (in Guo-Lai Halls, adds in Wulon fight if he gets the Green Granite buff), UNTAMEABLE (not even classed as a beast)
- Quilen Statue, Mogu'shan Palace, UNTAMEABLE (doesn't seem to activate, perhaps cosmetic?)
- Jade Quilen, Mogu'shan Palace, UNTAMEABLE (friendly)
- Ancient Guardian, Dread Wastes, TAMEABLE
- Granite Quilen (ID 59157, there are two others), Vale of Eternal Blossoms, TAMEABLE, ONLY ACCESSIBLE AFTER INITIAL VEB QUEST CHAIN
- Granite Quilen (id. 60223, there are two others), Vale of Eternal Blossoms, TAMEABLE - appears in "Might of Three" quest event at Exalted with Golden Lotus. Gone again after that.
- Wulon <The Granite Sentinel>, Vale of Eternal Blossoms (in Guo-Lai Halls), TAMEABLE
- Sleeping Guardian, Krasarang Wilds (requires someone with quest to animate), TAMEABLE
- Ruined Guardian, Krasarang Wilds (requires someone with quest to animate), TAMEABLE
- Stonebound Watcher (ID 63605), Vale of Eternal Blossoms (central corridor in Guo-Lai Halls, requires Revered with Golden Lotus), TAMEABLE
- Stone Guardian & Stone Guardian, Vale of Eternal Blossoms, (two NPC ids, both tameable. 59971 wandering, 59973 are sitting), TAMEABLE - phase out after initial VEB quest chain
- Quilen Stonemaw, Vale of Eternal Blossoms (summoned in fight with rare spawn Urgolax), UNTAMEABLE
- Stone Guardian, Kun-Lai Summit (requires someone with quest to animate), UNTAMEABLE
- Guardian of the Elders, The Wandering Isle, UNTAMEABLE (FLAGGED TAMEABLE, BUT EXOTIC AND IN RESTRICTED STARTING ZONE)
- Buried Quilen, Krasarang Wilds, Inanimate and not targettable, possibly only intended to be aesthetic and never active?? I'm not sure...
Stone, adorned:
- Portent, Vale of Eternal Blossoms (four colours, hunter tracking tame), TAMEABLE
- Portent, Vale of Eternal Blossoms (four colours, hunter tracking tame), TAMEABLE
- Portent, Vale of Eternal Blossoms (four colours, hunter tracking tame), TAMEABLE
- Portent, Vale of Eternal Blossoms (four colours, hunter tracking tame), TAMEABLE