With song examples! :D
This is just my opinion, and not in any particular order. Some of them I've included because they may not be explicitly in this genre (for example, Taylor Swift is country pop) but they may have one or two songs that overlap into pop-rock. I've included artists in the country pop, pop punk, electropop, hard rock and indie pop genres. If you need more convincing of them falling into this genre, check out the songs.
1.Avril Lavigne - What The Hell
2.Taylor Swift - Better Than Revenge
3.Michelle Branch - Goodbye To You…