From the list of non-toxic plants here, you may find some candidates.

https://www.aspca.org/pet-care/animal-poison-control/toxic-and-non-toxic-plants?field_non_toxicity_value[]=02

The term low light houseplant makes me shudder. Just about any houseplant benefits from bright indirect light...

Just about any house plant benefits from bright light but not every one has those conditions. We have to work with what we have. The only window in my home with a sill wide enough for pots is in the basement kitchen. I have had Aspidistra, Begonia bowerae, Chlorophytum, Anthurium, Saintpaulia, Schefflera and Phalaenopsis growing there quite happily. I can't tell you which of those are cat friendly.

Tiffany. I am familiar with that list and have gotten the plants from that list.

Rhamel, even house plant vary in the degree of light they are happy with. The porch isn't behind glass, where the glass may cut quite a bit of light, but I notice that it has less like than a south facing window.

Floral_uk. Yes, we are limited to what we have. Saintpaulia and Phalaenopsis are not toxic to cat, but the porch may not have enough light for Saintpaulia.

Thanks everyone.

Paul

I've just reread the OP and seen that the porch is open sided. So in fact you don't need to be limited to house plants. Things like Fuchsias might be happy there.

You should not judge whether a cat is interested or not in a toxic plant. One cat may be while another cat is not; a cat may ignore the plant for 364 days of the year but then decide to munch away, or single leaf may fall to the floor and it becomes intriguing to the cat.

I suggest that safety for cats be the first priority, then the ability to thrive in the environmental limitations. Don't forget that there are plants with gorgeous foliage....that these plants must flower can be quite a limiting requirement.

I have a goldfish plant that thrives in somewhat arid, medium light conditions. Flowers all year round, but really explodes with flowers in spring/summer.

African violets like less light ... I have mine tucked into cubbies in my office because it's too bright in here. They flower a lot, too.

I have a peace lily that really does well in lower light conditions, and also flowers every year. Two cats ignored it, but one of them really liked to bite the leaves. He didn't eat them, he just put bite marks all over them.

Peace lilies are poisonus to cats. Most aroids are. Sansieveria is out of the question. (I lost a house rabbit to one, it was not pretty) I hate to suggest this but *shudder* you may have to go with plastic flowers and foliage plants. Annuals might also be an option.

Gee, almost every single Sans. grower I know has cats, usually 2 or 3 of them. I hadn't a clue of this. I've never known or ever heard of a cat eating a Sans.

Cats tend to nibble on other plants first, but Sans have saponins, (natural soap) If they were to take a huge chunk they would start frothing at the mouth. Like I said I lost a pet to one, it took two days for the poor thing to pass. It was horrible.

Aspidistra, like another poster mentioned. Not on the toxic list and shade tolerant. Does not bloom, but comes in fun variegated varieties. You'll have to give up on the blooming part, I think, unless you go with orchids, which can be a little high maintenance (they need humidity and SCAL is low on that). Also, most plants need significant light to bloom. Some of these other varieties I know nothing about, so can't speak to them.

https://www.aspca.org/pet-care/animal-poison-control/toxic-and-non-toxic-plants/cast-iron-plant

Wouldn't recommend peace lily, though. My cat has been sneaky enough to get a bite of leaves while I was rearranging furniture one day and had it on a low table, so unless the plant is really high up out of the cat's reach, don't get one. With pets, everything is a compromise.

I doubt that the low light is what caused the African violet to die so quickly. Chances are that it was rot from overwatering or a temperature problem (too hot/too cold). My experience is african violets are very tricky to water correctly unless you grow them on a wick or (my preference) as a semi-hydroponic plant. I could never get them to thrive when I tried to grow them in soil.

In my experience, african violets can flower even in a north-facing window, so I think they are pretty tolerant of low light. Even if it was too dark for them, though, they would grow spindly weak growth for a long time before actually dying of the light deprivation.

I do believe it is true that orchids are non-toxic. I've never heard of an orchid that was poisonous.

Sansevieria is a plant that, in MY EXPERIENCE, tends not to be appealing to cats (my two cats love chomping on grassy foliage and have mowed down a spider plant to nubs more than once, but ignore my Sansevierias) but if they DID decide to eat it then it would definitely be very bad. I personally am comfortable growing sans around my cats since they have never tried to bother mine, but some people might prefer not to even take the risk.