I've also read that Dieffenbachia is a potential problem. It supposedly contains a much higher concentration of calcium oxalate crystals crystals than pothos (pothos is supposed to be bad to ingest for this reason). It is supposed to be nasty for anything that eats it, but I've also read that people have used it in frog vivariums with no issues. I don't really like the plant, so I don't bother with it.

Crotons seem to be used frequently in vivariums, I've stayed away as I've also heard they were a potential problem. I do like the look of some of them though, so I've been holding off judgement until I can find out more.

I do have 2 types of rubber plants, Ficus elastica and Ficus elastica variegata. They are sturdy as you say, and not much chance of being broken by a wee frog so they're in for me. Note that there's also the unrelated "Baby" rubber plants, Peperomia obtusifolia, that are on the 'safe lists' like the one you've found and that I've fallen in love with for vivariums. Nice thick leaves, come in several shapes and colours, and some have great upright growth habits.