Hello Winebug, sorry for the late reply!
At present Rogue Touch has only the primary tileset you've seen in screenshots, which is a cobbled together set of modified RLTiles and additional tiles that were created by us to mimic the old Atari ST / Amiga versions of Rogue.
I actually own the complete set of *ALL* Oryx Design lab tiles (not just the fantasy sets). I think they are awesome for prototype work, but sooooo many people have been using them to make games on the App Store. This ends up creating chaos in various forums every time a new game appears and people not familiar with Oryx claim the developer is a copycat or a thief!
The DawnLike set is interesting, I haven't seen it before, might be worth adapting for a future update or game... thanks for pointing that one out
On the topic of ASCII - I may sound like a roguelike heretic, but I think my days of playing (most) ASCII games are over (even though I'm old enough and have played each of them as they originally appeared). Would I ever include an ASCII tileset? I won't rule it out as part of one more Rogue Touch update, as a final love-letter for fans!
Note that Rogue Touch 2 and Spirit Hunter Mineko and my other (further future) game designs will be completely custom drawn tilesets. I think that's the only way to get noticed these days. Don't worry, these upcoming games have extremely high quality assets for roguelikes (a few of which you can see here on my website)... I am not trying to adhere to mid 1980's styles with them
Gears are turning again in the development machine here! More details coming in my front page blog after the holidays... Speaking of which, hope that you and everyone who checks into the forum regularly has a good one!