Do they live inside or outside?

@Liz Usually inside but they're outside maybe once a week or so to get extra sun. They're on a rolling shelving unit

Yes, I agree with Rina. That second photo especially made me wonder if you had some hungry visitors.

Yes it does look like something has been eating them, I just don't know what. I should've clarified that when they're "inside", they're in a sunny covered patio, although I will admit I'm still trying to figure out the best way to keep them all happy as I agree some look etiolated.

And yes the 3rd photo has a flower stalk

Are there kittens anywhere nearby that can get to these? They are very curious around plants. Nibbling on, walking on top of, clawing into & digging out soil, and even sitting inside the pot wouldn't be out of the norm. They think they're too cute and can really mess up your plant collection ... even the ones with thorns.

An adorable baby calico wrecked havok on my porch & did this to my immaculate Jade:

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Oh no! I didn't think about cats. I'm pretty sure most of them are out of cat reach but maybe! We don't have cats so it would have to be neighbor cats

I don't know ... These were on the 2nd shelf of a 4-tier rack.

We don't have cats (or any pets) either.

It could be cats, it could be squirrels, it could be a mouse or some other small rodent (maybe vole? - not sure about that one)...also snail - but you could tell that one since they leave slimy trail and there isn't one.