“America’s Got Talent: The Champions” doesn’t start on NBC until January 7 but we’ve got all the details about this spin-off of the summer hit. Fifty acts — including five winners apiece from America and Britain as well as eight others from around the world — will compete to be declared the best of the best. Among those “Agt” champs coming back for more are singing ventriloquist Darci Lynne Farmer, who was only 13 when she won Season 12 of the reality TV show in 2017.

The other winners from the American version competing for bragging rights are singer Bianca Ryan (2006), dancer Kenichi Ebina (2013), ventriloquist Paul Zerdin (2015) and magician Shin Lim (2018).

Among the 28 “Agt” also-rans that are in the running once again are six who were the runner-up in their respective seasons including pre-teen singing sensation Angelica Hale, who lost to Darci Lynne. The other second-place finishers hoping for a different result this...