The way the top young leaves wraps each others at the base and the way they curls just like it was water depleted, kind of reminds me more of a Nolina, one with undrground caudex like Nolina greenei, or even N bigelovii, or other beargrass...? can you check the underground caudex...? at least the underground structures of Agaves, Bromelids or Nolinas might be distinguishable...also does the edge of leaves smooth or with teeth?