Baxley and Kelsie are too ee-ee together. Dislike.
Baxter I don't love with Espen.
Zeke I actually quite like, I don't think the k-k sound is too big a deal. But if you like Zeke you have to also like Duke.

I like the sound of Griffin Felix Kelsie
I like the sound of Griffin Kelsie
I like the sound of little brothers called Espen and Griffin.

SO it's my fave. I also think you ned to consider Nash. Just to stir the pot (it's my job )