Here's a couple others that I'm prejudiced in favor of because I worked on them:
Quabbin Seadrome puts an imaginary seaplane base on Quabbin Reservoir in west-central Massachusetts.
CGAS Salem reactivates the old Coast Guard Air Station on Winter Island in Salem, Mass. There are two versions, one that depicts the base around 1939 or 1940 for Golden Wings, and one that depicts it around the early-mid 1950s for "FS1954 - A Half Century of Flight." CGAS Salem was strictly a seaplane base and had no land runways, but it had a parking apron for amphibians and helicopters.
I think the latest versions of Quabbin and Salem are available here at SOH. If you can't find them here, check FlightSim.com