Flowering Houseplant Challenge

I have managed to keep several houseplants alive for a couple of years now, but none of them have flowered. However, I have brought several flowering pot plants home from my Grandma's. Probably some of them should be planted in the garden rather than kept indoors. There's an Osteospernum Purple Sun (pretty sunset colours), a Begonia Illumination Apricot (I usually hate begonias with their fleshy flowers, but this one is a really pretty yellow tinged with apricot), a Dianthus that's unlabelled but is probably Coconut Sundae, and a "Dahlietta" called Surprise Louise.

No idea if any of them can be kept inside long-term, but they are so cheery that it would be nice to replace them with something else if I need to move them outside.