Fan Expo bought out several of the former Wizard World events, including New Orleans last year. They're one of the biggest groups in the business with shows in a ton of US cities and in Canada. This past January was their first show in New Orleans.
Big Easy Con in 2019 was promoted by Leftfield Media, the folks that do Awesome Con in D.C. and Rose City Comic Con in Portland. Those shows are pretty decent, but they completely forked up in New Orleans switching dates.