DtG -- I'm not familiar with Ezra's stuff but had a quick listen to two of his YouTube videos. Seems that they are sort of hybrids of all the attributes I listed. I suppose you could call them contemporary folk. I hear a definite Mumford influence. He has also covered Mungo Jerry's `60s hit "In the Summertime", which, it could be argued, was contemporary folk (skiffle) at the time.