But anyway - I wonder if that tendency in Trans names is driven by the desire to pick something that doesn't just resonate with you, but has a meaning that resonates with you... and if you're looking for sources of meaning, Mythology and Nature are two *solid* options.
Especially if you're (by your choice, or otherwise) breaking new ground away from your family's culture and traditions. Someone letting the bridges to their evangelical family burn might as well not go to a standard list of biblical baby names.
I spent ages on the Behind The Name website looking at name meanings. Then I got decision paralysis and said fuck it, I have three middle names now.
Fun fact: the Soc Sec Admin database has a pretty short character limit for middle names.