X Football Leagues Era (1990-2020)
From the early 1990s to 2020 Leagues have sprung up that have attempted to be the AFL / WFL / USFL of the Era. Some of these Leagues, such as the XFL of 2001 and 2020 have had quite an impact on the American Football scene, with big budgets, and Major TV contracts.
XFL’s
XFL (Seasons): 2001
Alliance of American Football (Seasons): 2019
XFL (Seasons): 2020
Spring Leagues
Another set of leagues has played a limited schedule – 2 to 3 games per team per season, often due to fans not showing up at the gates, or sometimes due to repositioning themselves as leagues confined to one area – ie. South Florida (Stars Football League) or New York / New England (FXFL)
Stars Football League 2011-2013
FXFL Fall Experimental Football League 2014-2015
The Spring League 2017-Present
Spring Football League (Seasons): 2000
Stars Football League (Seasons): 2011 2012 2013
Southern AA Development Leagues
Gridiron Developmental Football League 2015-2019
Gridiron Development Football League (Seasons): 2020
Leagues Which Failed To Start
Most of these Leagues, however, have failed to even start their first season, have defrauded investors, or just suffered from a lack of mainstream publicity in the Internet Era with so much Football and other sports available to view online.
Professional Spring Football League (Seasons): 1993
International Football Federation (Seasons): 2000
Fan Ownership League (Seasons): 2001
North American Football League (Seasons): 2016
Trinity Professional Spring Football League (Seasons): 2018
Freedom Football League (Seasons): 2020
Major League Football (Seasons): 2020
Pacific Pro Football (Seasons): 2020
X-League Extreme Football League (Seasons): 2020 (L)
Note: 
Usually considered part of the World Football Leagues.
(L) Usually considered part of the Legends Football Leagues.
(S) Could be considered a Limited Schedule League – 2-3 games per team.
