There's a bunch of stuff I haven't identified yet. There are a ton of bamboo patches in the area, some of which may be Japanese Arrow Bamboo or even Tonkin. Keep your eyes open.
Inkberry of SOUTH Florida is scaevola taccada which does not have straight shoots.
Yaupon again does not grow naturally this far south, but you may find the occasional yard tree. River Cane does not grow this far south, either -- but as I said above there are LOTS of plantings of dozens of species.
Where are you in Fort Myers? I live part time downtown in the Fort Myers Yacht Basin, and part time at my Lady's house near the The Bell Tower shopping center