Welcome to the forum.
I don't think I am an expert on Nep.
The two highlanders in my collections are
alata (Banaue, highland) growing and pitcher very well
khasiana, slow but pitchering
and may be Gentle which just growing without pitcher
I would avoid most highlander and all ultra-highlanders, they like bright light, high humidity but cool temperature (<25*C day time with a drop in night temperature to <16*C) that can only achieve by a terrarium set up with bright lighting and special cooling. May be a Peltier cell “Thermalelectric” air to air cooler would do the job, see *Here