Its not off topic at all. Green Walls are a very popular thing in aroid growing now. A bunch of people on other forums I am on have put them in their houses as stand alone plant features with a water reservoir at the bottom and water pumped up and allowed to drip down through the felt back into the reservoir.
Just looking at that photo, it doesn;t appear that the (what appear to possibly be alocasias) are actually growing in the felt itself, but rather are planted in ground at the base. Since that feature is outdoors, and yours seems to be going as an outdoor installation as well, you could probably get away with the lauterbachiana planted unground at the base as well.
Of the philodendrons you listed, the only climbers as opposed to terrestrials are hastatum (silver sword) and possibly Imperial Red. All the others are either terrestrial trunk forming plans (Thaumatophyllum Super Atom) or self heading terrestrials (Birkin, Moonlight, Black Cardinal.) Again, you could plant these at the base of the wall, but they would eventually get too large and heavy ON the wall.
Monstera adansonii would do well, so would Monstera deliciosa, but deliciosa gets heavy over time. It WOULD however really latch on and not be prone to falling off.
