Keeping them outside but out of the rain (under the eves) seems like quite a reasonable situation. These guys like being outside in the winter, although I don't know exactly how cold it gets where you are. I doubt it gets too cold for semps, as they are quite cold hardy. I would prefer to leave them outside keeping in mind that they are in pots that may freeze solid, in which case some protection would be advisable.
I am not optimistic about the top plant in the first picture. We can't tell from a picture but to my eye that plant looks like it is progressively rotting. I can see down at the lower left another leaf is slowly falling victim. It is not too unusual to lose a few like this. I had one do exactly the same thing on one side like that. When I finally pulled it up I could tell the core of the plant was fatally rotting. I suspect the same with your plant. If you want to take emergency measures, you can try what gg5 says. At that time you could feel around and see if you think the core of the plant is rotting, in which case it unfortunately has earned a one-way trip to the compost bin. I'm a bit harsher than most, when I see rot I want to see it gone ASAP. I'm sorry but "buh-bye", you're outta here. IMO, in the end it matters little. That pot of yours will still fill up and overflow with the three remaining plants. And these things multiply like crazy which requires getting rid of the offsets/chicks one way or the other. Semp growers are constantly disposing of excess offsets that are perfectly healthy, I have no problem getting rid of rotters.
The others look pretty good with the exception of the bottom one in the third picture. I has a little something going on that I can't judge from a picture. Maybe just some physical damage from transplanting. Keep an eye on it.
