I believe they are the two side by side are the same type.
I took them into my care to give them the love they need, however.. I disagree. If they can grow x feet in the wild.. in the correct indoor climate they could perform similarly.
The room that they are in the side by side photo is a south facing sun room with basically floor to ceiling windows up to the second floor. So I don't think lack of light is the issue here.
I appreciate your time and knowledge however, I am looking to understand what's going on insider her, so I can decide how to proceed. Is this what corking looks like on the inside? Do the hollow pieces become garbage or can they continue to be viable to the plant. A lot of this plant is like this, it's clearly got something going on.. but is beyond my knowledge!