I know myself and a few other newbies are rooting cuttings for the first time. I thought I'd give an update of where I am as of now. Out of 22 cuttings shown, 16 were started on November 12th (the others started a couple weeks later). So far, 8 have rooted...maybe 9, unless my imagination is deceiving me. Most have budded out, as you can see.
My cuttings were started in either a)sphagnum, or b)perlite. Don't want to put all my eggs in one basket you know. Once I saw roots or leaves I potted up to perlite, which all my cuttings are in now for convenience. The chamber has very high humidity and a heat pad on the bottom. It stays around 71-72 at night, and gets up to 78-80 during the day with the lights on. Notably, the sphagnum cuttings began to root much earlier than the perlite ones, but I've had 3 perlite cuttings show roots in the past 2 days.
A big thanks to some of the forum members for providing me with most of these cuttings.
The bin setup. Pretty ghetto, but it works. Hoping I don't burn the house down with the heat mat in the chamber.
Here's a top view. As you can see, most of them have leafed out. Also, sphagnum gets everywhere, including furniture, carpet, and our cat. Note that it's all over the place in the bin, even though I tried to contain it to gallon freezer bags in the bin.

Atreano. The first one of my cuttings to root. This one was done in sphagnum, but a second Atreano cutting started in perlite just showed me roots this weekend. Thus, Atreano wins the rooting battle in both substrates.
Osborn Prolific. I mislabeled the cup by adding an extra "e"...I've heard of Osborn, Osborne, and Osborne's. Not sure if it matters, but I don't want to the one to screw it up! As the name suggests, this guy has the best top growth of any variety, with 1.5 inches of new stem already.
Ronde de Bordeaux. This guy is my most vigorous cutting for sure. Lots of root and leaf growth, and fast. The other side has even more roots. I've got another one started in perlite, and it's got the same amount of top growth, but no roots to speak of yet. Don't ask about the muffin tin.
Overall, I'm proud of myself for not killing everything yet. Still got a ways to go before spring though. Not sure what I'll do for space when the UCD cuttings come!