Do all Darkfriends have the equivalent of the black threads seen in Tel’aran’rhiod attached to Ishamael and Asmodean? (I have a theory that Fades may use these threads to travel on, you could ask about that.)
No. Fades travel where light and darkness meet. [handwaving]
If you are viewing this on github.io, you can see that this site is open source. Please do not try to improve this page. It is auto-generated by a python script. If you have suggestions for improvements, please start a discussion on the github repo or the Discord.