One has thin succulent leaves around two inches long and deep pink floppy flowers, it can trail or cover ground. The other has different color flowers on the same plant, yellow, red white and orange. This one is at the back of picture.
This one is at front of picture, it also trails or ground cover. Mostly dies back in the winter. The leaves are flat and succulent and the stems are soft but brittle. If you put a bit of this plant in the soil it will root with a week and flower in three.