I played through the game recently and the ryona is a little disappointing to me. Audio is very integral to ryona for me and that is where this game's ryona fails miserably.
But anyway, for the modern day section, you have Layla as a new playable character. There is only one small part of the game where you encounter enemies as her and she can be attacked. However, none of the enemies have any special kill animations. They simply one shot you with a bow, even if you are in melee range. There are a few different animations on how Layla crumbles to the floor which are somewhat nice and then ragdoll takes over which can lead to some nice poses, but there is no death scream at all. She is completely silent, which ruins it for me personally.
As for the Animus sections, there are several instances where you are allowed to play as Aya. Some of them are just boat sections where you are never allowed to leave the ship which kind of sucks. But some allow you to roam around on foot and fight enemies. This is a bit better than the modern day section since all the enemies have kill animations. But once again, there is no real audio for the different deaths. There is this one where the enemy gets her onto her knees and slits her throat from behind, but she is completely silent during the whole thing. This basically kills most interest that I have in this game's ryona.
So if audio is not integral for you like it is for me, you might enjoy some of the ryona in this game. Some halfway decent motion captured kill animations that then transition into halfway decent ragdoll effects.
One other thing that sucks is that Bayek gets tons of different outfits, but Aya gets absolutely none. This will hopefully change if Aya gets her own future game at some point.
Oh, and for those wondering about female enemies, there are some in the game, but they are few and far between, only appearing during specific side quests. There are absolutely no female enemies during your normal open world exploration, unfortunately. They do make sounds at least, though, lol. Oh, and you can also kill random civilians, but you don't get any special animations that I recall when doing so.
Anyway, I liked the game overall. Ryona was meh, but the world was pretty impressive, though the side quests and random activities get a bit old after a while. And the last half of the story kind of sucked, to be honest. Wish they would bring back the competitive multiplayer to this series, but doesn't look like it's in the cards, unfortunately.
Either way, a female lead AC game seems like it's coming sooner rather than later. So this could be a good thing for ryona purposes. We'll see, I guess.