Xerographica

I was thinking Xerographica, too, or any other whitish variety, like chiapensis (which looks like a miniature Xero). Looking on the websites of the various sellers, you may see some shapes and colors (if whitish) that you like, then you can research them and determine where to buy them. Whatever you get you'll want to mist daily probably, and soak weekly at least, with a wee bit of liquid fertilizer in the soak water from time to time. Your conditions sound a lot like mine, though you may have more humidity than we get in NM. I had nearly all my tillies out last late spring through early fall in a north-facing porch and I think they enjoyed the bright, reflected light reflected and the very occasional rain splashing in. I was tempted to put my Xero and similar plants outside in a southwest facing position [several hours of high-altitude full sun] but I was a little nervous that they might be stolen by someone who wouldn't know how to take care of them.

Many Peruvian species can be grown provided you give them some supplemental humidity.