What is the term that describes the genre that grew from the honky tonk tradition and was popularized by Patsy Cline, Jim Reeves, & Floyd Cramer?

The first music genre to be commonly known as honky-tonk was a style of piano playing related to ragtime.

Explanation:

Jim Reeves, Patsy Cline and Floyd Cramer were known for country side music called Nashville sound which was pioneered by Jim reeves. Honky tonk type music are country side music and they are found in the south and south west of United States. Jim Reeves, Patsy Cline have began their music career be becoming amateur musicians in the genre of honky tonk music style.

This is the kind of music which gives importance to rhythm rather than melody. In olden days bars were attached to the theaters and in the bars such honky tonk music was staged which attracted many people and they liked it.