I've put some work into this, and here's what I've found:
The light I really want (the thin puck light with the night-light ring) has three LED elements in it: i) the 2.3k indirect night light ring, ii) a 2.7k direct ring, and iii) a 5k direct right.
They have a common hot and independent ground leads. Thought it would be really fun to set it up on some sort of rotary switch so that I could switch between the modes.
However, I am finding that the input voltage for each element at the rated wattage is about 34v (no light below ~30v, 1.5x rated wattage at 36v). And at rated wattage, the light gets hot (125F on the FLIR). Between the fact that this is an odd voltage, and the heat being generated, I am ditching the concept....
Where I am looking next:
I'm still disappointed with the available selection avaialble of thin (<1") recessed puck lights. Everything I've found in this size so far is not rated for use in wet areas (i.e., shower room), single temp, and cheap feeling. All the quality lights I am finding are sold with a DC driver for use on AC, and the voltage on most appears to be ~36v (though information on this is spotty).
I have some inquiries out on a few of the (seemingly) higher quality AC/driver units to assess whether they would be compatible on 12/24DC (scrapping the driver). If those prove fruitless, I will just go with the cheapo 12v pucks I am finding on Amzn
and make it work, either doing my best to seal them when installed in the shower/wet room or going with another light in that room.
I'll update the thread with what I find. Any guidance/comments/opinions very welcome!