Sarek The Vulcan's Home For Wayward Alien Children. And people were worried about "small universe syndrome" before.
Thelin and Shukar run an all Andorian special ops team which defends Federation liberty with Ice Powers!
Currently canon, as far as I know. TAS is 2269-70. DSC is somewhere in late-2257. Judging by the age lines on Thelin's face in TAS, he's probably in Starfleet by now and has been around.