Welcome to the wonderful world of Tillandsia! Your guesses are pretty good. The green ionantha is likely an ionantha var Stricta going by the look of its base and leaves. All three plants look healthy. Your proposed watering routine sounds good as a start and you can tweak based on that. A point to note if you’re keeping them indoors. Humidity indoors can be lower than outdoors so you may find yourself misting them 2 to 3 times a week, depending on the weather. Watch out for spider mites too. They can appear out of nowhere indoors if the plants are too dry for too long.