hmm...I should rather say: the plants are to small for these pots

Oh! Thats good, I was really worried because a couple of the larger ones looked like they were being forced closed by the rims of their jars

Hello! These pots seem to be an okay size, but I see a few other issues with your setup. First of all, the soil mix your plants are in seems to be too peaty and water-retaining. Don't feel bad, most mixes that are labeled for cacti and succulents aren't actually appropriate for them. Unless you already have, it is recommended to create a 50/50 mix of perlite and this soil. Perlite can be found at most garden centers and at Home Depot and Lowes. You also mentioned that you had one of your plants in a jar. Succulents should always be kept in pots or containers with drainage holes, because if they sit in water, they will rot. If you are looking for a relatively cheap and aesthetically pleasing potting solution, a four inch terra-cotta pot is a good choice . Repotting can stress a plant out, but it is important to get it into better conditions to keep it healthy. Echeverias are also plants that require lots of sun. Window light is usually not enough for them and, if you plan on keeping them indoors, supplemental lighting is recommended. You can also move them outdoors with an acclimation period to avoid sunburn. If you have any questions, be sure to ask!

I agree with succulentsavvy, the pot sizes are fine, don't go bigger when you get new pots. The second one the top is a great size and Terra-cotta is great for succulents., the jars you'll want to replace right away. The white pots are OK if they have drainage holes. Water plants only when dry, let the water run through and out the hole. You can test to see if they are dry using a wooden skewer inserted for a few minutes. Not sure how fast draining your mix is but a good mix is 50% perlite or pumice 50% commercial mix. Your plants look nice. Good luck!

Try not to use anything clear for pots, the roots like darkness.