Camus would be the next GBH which Banner heroes are included still unknown.
But overall this banner has strong heroes. But only blue and neutral so you can not do good full summons and will highly lose some orbs.
The strongest heroes seems to be Cordelia but rest overall are strong too and with inherit she become insane.
Lyn with new game mechanic ability will be strong too but will only be help as pure support but does not need inherit.
Charlotte is actually a great Blue Lance maybe the first that can keep up with Effie. She is a strong lance with good atk spd and hp pool..
Caeda runs in same lvl like bunny lucina weaker in attack as Linde but would go in same lvl like every inherit Blade.
Overall all Heroes atleast 8.5/10 without Inherit because of insane stats spreads.
But a warning for free to play we will see this banner maybe only one time in year and you must pull blue or neutral.