It is Kopa, Afua, and Kovu. But regarding your question about this being a Lion King off-brand, I wouldn’t say necessarily. Consider it a way of expressing comedy and illustrating What Ifs.
WHAT IF KOVU AND AFUA FOUND KOPA IN THE HAKUNA MATATA JUNGLE IN THE LION GUARD? AFUA - “LET’S GO GET OUR BEST FRIEND KOPA BACK.”
KOVU - “ABSOLUTELY. KOPA, HERE WE COME.”; A LOT WOULD CHANGE IN THE LION GUARD AND THE LION KING 2: SIMBA’S PRIDE