Bartleby's washed but that High-Godly regeneration means he can't die permanently. How does he handle power nullification
I'm not sure why Bartleby's profile doesn't seem to just outright say he has concept manipulation, but he does, and it's Type 1. Any mentions of Type 2 would be leftovers of when Type 2 was "false platonic concepts".
Spider, who is Bartleby's ontological equal, has Type 1 concept manipulation.
Also, uh... this isn't really something on the wiki, and in fact I only came across it like two days ago, but there's a character in Wallaru that sort of just says "no" to the power nullification stuff in Wizard101. Like, you can cast a dispel on them, and a shield to protect against them, but they just outright ignore both of those things and go for a one-shot kill. That sort of logic didn't apply to ALL of their abilities but it did for their one-shot KO attack. That's relevant information here because the character comes from the Dreaming, which is itself stated to be "dew" from Bartleby's unconscious side. Said character also has reality warping, spatial manipulation, duplication, and power mimicry, among other things, so yeah...
I'm not sure if Bartleby would have Nonduality Type 2 or whatever, but it's worth mentioning that the Dreaming also outright gave a character the knowledge and ability to create a device that itself could transform the Nothing into a physical world, thus nullifying Nonexistent Physiology and Nonduality Type 2 together. That wasn't the device's intended purpose, but it still happened. Said device was also powered by Bartleby's Song of Creation.
Counting the number of layers that Bartleby has for stuff like concept manipulation and the like is pretty difficult, but you can argue it's >10, depending on how you want to treat the relationship between pierce in the game and resistance negation on the wiki. I brought this up in another thread but there are characters that have "-999% shields", which effectively made the player's resistance negation worthless. For more context, -100% is full "immunity" to magical attacks including conceptual ones, but that can be bypassed by the verse's pierce mechanic to the point that the 100% is 0%. The character I mentioned earlier just outright ignores those types of things entirely and goes for the kill anyway, and they're not the only instance of the verse completely ignoring resist and shields outright.