What a 40-team MLS could look like.

From West to East, here is what a 40-team MLS could look like.  4 conferences of 10 teams each

Pacific

Teams that already exist, or already announced (7)
Vancouver
Seattle
Portland
Sacramento
San Jose
LA Galaxy
LA FC

Possible Additions (3)
Las Vegas
San Diego
2nd SF Bay-Area team

Mountain

Teams that already exist, or already announced (7)
Colorado
Real Salt Lake
Minnesota United
Sporting Kansas City
FC Dallas
Austin FC
Houston Dynamo

Possible Additions (3)
Phoenix (I think this will be the 30th MLS franchise location)
San Antonio
Edmonton

Central

Teams that already exist, or already announced (7)
Toronto FC
Chicago Fire
Columbus Crew
FC Cincinnati
Nashville
Atlanta United
St. Louis

Possible Additions (3)
Detroit
Indianapolis
Louisville

Eastern

Teams that already exist, or already announced (8)
Montreal Impact
New England Revolution
NYFC
NYRB
Philadelphia Union
DC United
Orlando City
Inter Miami

Possible Additions (2)
North Carolina
Virginia Beach/Hampton Roads