Nice arrangement!

The flowering ones are, I think jovibarba (pls. correct me if wrong anybody!) - plant just about identical to sempervivums, aka hens and chicks. The difference is in the flowers: jovibarba's flowers have more closed petals, most often yellowish, while sempervivum flowers are open, like stars and are most often pink, but also white and yellow. Other difference is how they multiply.

Otherwise they grow in very similar conditions. They are hardy succulents, and overwinter better outdoors than indoors - as long as they don't sit in wet location (succulents don't like wet feet and will rot). There are at least 2 different ones in your planter, but to get the name could be difficult, there are probably couple thousand varieties. The blooming rosette will die after flowering (they are monocarpic-once blooming). But that's why they have so many 'chicks' to replace it...

Other plant is also hardy succulent - I think it is Sedum 'Angelina'. It trails, multiplies easily and has small yellow flowers.