Can anyone point me to where I can purchase the last two effects Jeki does here (level 75 and level 100)?

Is there another method other than Tenyo's 4 Nightmares or is that essentially it?

https://www.instagram.com/p/CmHTS2YJ8DX/

Essentially that is it. There are variations on merging the loop back into the rope, but the method is the same.
If you study Tabary's material, you will find a lot that can be adapter to the RM type tricks. This thought was followed by Scott Alexander in his Slashed! routine.