Q.plants that will be good in same areas plumbago
I have plumage planted and is doing very well what other plants like the same conditions?

Here are some links with some recommendations.
https://www.gardeningknowhow.com/ornamental/shrubs/plumbago/growing-plumbago-plants.htm
https://www.gardeningknowhow.com/edible/fruits/currants/growing-currants.htm
https://www.gardeningknowhow.com/ornamental/shrubs/eugenia/growing-eugenia-plants.htm
https://www.gardeningknowhow.com/ornamental/shrubs/sweet-pea-shrubs/growing-sweet-pea-shrubs.htm
https://www.gardeningknowhow.com/ornamental/shrubs/yesterday-today-tomorrow/yesterday-today-tomorrow-plant.htm
https://www.gardeningknowhow.com/ornamental/shrubs/ixora/growing-ixora-shrubs.htm
I encourage you to visit your local garden centers and greenhouse and window shop!
I also like to drive around the neighborhood and see what is successful in the nearby landscapes.