Contemporary (newer) Carnival Glass appeals to a very large audience and production of Contemporary CG can be attributed to several companies. Fenton and Imperial produced quite a bit until the companies closed, and Indiana Glass made huge quantities as well. Some lesser known companies are Westmoreland, L.E. Smith, Boyd, Wright, and Mosser.  There are others, but safe to say...these are the ones that are most recognizable and capture the market share of interest on the web.