The original Hyrule Warriors had a lot of favoritism to OoT too, for some weird reason. This is prior to DLC and stuff.
Zelda is WAY different. The ones they chose for base covered a lot of the ground of all the big characters people love. Link, Zelda, Ganondorf, Zant, Ghirahim Midna, Fi. A lot of the base characters were still pretty diverse. And yeah you’re right base game Hyrule Warriors focused mostly on Three games OoT, TP, and SS but the DLC went all the way from Link’s Awakening, ALBW, Majora’s Mask, even Wind Waker and the DS games.
FE had the chance to do that but they made it painfully clear that they were still going to focus on only those Three games with the DLC. When they could’ve reached out for some awesome fan service like Ike, Greil, Ashnard, Roy, Eliwood, Hector, Mark, Ephraim, Elika, and more. They just didn’t.