Hello carolp, try to see if you have space for Clivia plants, really shade loving plants that gets to bloom indoors in late winter after being given a cold rest in Fall.
Other suggestions:
Aspidistra Elatior variegata..or there is also the solid green type.
Snake plants as listed on the link you have, they come in so many varieties, so you got a lot of options: these are a couple of mine
Sansevieria francisii
Sansevieria patula:
Hoya shooting star - always indoors here, but I make it sit in water always:
When in bloom:
You may already have Golden Pothos, I grow mine in water gel beads, so the growth is contained and does not go too dry, no fungus gnat problem
ZZ plants -Zamioculcas zamiifolia
Dracaena marginata
Tillandsias - can take shade, but preferably with access to bright light, can be attached anywhere, it does bloom, but it is monocarpic, so it means it is on its way out. But it will make new pups to continue the line eventually. No soil needed.
This was in May 2014 when one of my tilly's is in blooming mode:
Btw, I read that blog link you have, not in total agreement with Aloes for indoors. Maybe to protect it from the cold in winter, but during the warm months, they are best grown outdoors in full sun and warmth. Depending on what kind it is, it will even give you some nice blooms.
Orchids - there are some you can grow indoors, but there are so many kinds you really need to understand their light, temperature and watering needs. Typically what has worked for me are the Phalaenopsis orchids, easily available in most supermarkets. It is a love/hate relationship with this plant, some are good with it, some are not. It takes a good amount of control watering Phal orchids if grown indoors, at times, overwatering and poor airflow is the leading cause of its demise. But they sure are so exciting to see once ready to bloom and Phal blooms lasts for several months, which makes them a good indoor favorite. I do grow other orchids and next to Phals, I love the Oncidium alliance orchids, they stay outdoors in some shade during the warm months and during late Fall they go indoors near a bright light area, and I get their blooms in early winter to early Spring indoors.