So yeah, they all worked on tons of other projects, but pretty much none altogether like they did for CT
If you mean single key members sure but as far as the body of the team... That's not entirely true. A large group of CT/CC members worked altogether on plenty of games. Here is a list of how many members from the CT/CC team worked on the other titles:
Super Mario RPG: Legend of the Seven Stars (19 members)
Treasure Hunter G (16 members)
Threads of Fate (36 members)
Brave Fencer Musashi (25 members)
Xenogears (29 members)
Vagrant Story (40 members)
Legend of Mana ( 42 members)
Secret of Mana ( 15 members)
Seiken Densetsu 3 (23 members)
SaGa Frontier 2 (40 members)
Final Fantasy 7 (18 members)
Final Fantasy 8 (50 members)
Final Fantasy 9 (43 members)
Final Fantasy 10 (24 members)
Kingdom Hearts (19 members)
Dragon Quest 8 (43 members)
Final Fantasy Crystal Chronicles: The Crystal Bearers (70 members)
Deep Labyrinth (Masato Kato/Scenario) and (Yasunori Mitsuda/Music) (2)
Even though these games might not necessarily be related to CT or CC many of them still contain the heart and soul and creativity of the CT/CC dev members.