So with Legendary Female Byleth a thing now, that now confirms Legendary Male Corrin (ideally in his Hoshidan Noble attire) and Legendary Male Robin are much more realistic possibilities now.
Looks like Legendary Female Byleth works similar to her male counterpart, but this time, she is a blue infantry tome, and her base skill kit is capitalizes her glass cannon build. Her weapon even looks similarly to Legendary Male Byleth's Professorial Text, with the main difference being instead of granting Null Follow-Up 3 to herself and her allies based on her Spd, she and her allies can inflict an upgraded Guard while further accelerating the special trigger. Along with Ruptured Sky, Atk/Spd Ideal 4, and Lull Spd/Res 3, she has an exclusive C-skill called Goddess Bearer that boosts her Atk/Spd by 7, Null Follow-Up 3, and the ability to warp to a space adjacent to any ally within 2 spaces so long as she has an ally near her.
The other characters to pull in this banner are Legendary Lilina, Líf, Brave Marth, Seiros, Brave Eirika, Legendary Male Byleth, Freyja, Gatekeeper, Ash, Brave Marianne, and Yuri.
Quite a stacked banner with lots of good units to pull.
Can't say I'm particularly happy about locking guaranteed 5-star summons of choosing after 40 pulls on Legendary Hero banners behind the FEH pass though.