From what I understand, although Conal Elliot coined the term FRP first in a relatively narrow sense, today the term FRP is used much more freely to describe reactive programming using functional building blocks (especially combinators like map, filter etc.).

There are some nice papers that give an overview of the FRP landscape.

“A Survey on Reactive Programming”: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.416...

“Towards Reactive Programming for Object-oriented Applications”: http://www.guidosalvaneschi.com/attachments/papers/2014_Towa...