Most of the districts aren’t even 20 years old.
Daytona Beach Racing & Recreational Facilities District is the oldest (1955) but would likely have agreements with NASCAR.
Seminole Improvement District was founded in 1970 but I haven’t dug in enough to see who they would have agreements with. Westlake is a new municipality but does seem like it make have some large developments involved in its creation.
Babcock Ranch and Lakewood Ranch are both large, multi-county residential developments whose respective districts were established in the 2000s, they likely have developed agreements with the developers because that’s like the default use case for such agreements.
Water Street Tampa is not even a decade old and is tied to Strategic Property Partners.
The development agreements are also intended as long term with a maximum of thirty years. Given the time frame of the search, age of most of the districts and their general close association to a single corporate entity, there are probably not more than a few answers if not just a single answer for each district that they already know. I don’t think this is a fishing expedition. I’m guessing they know already know the agreements exist but have broad language to avoid the accusation of just digging up some single case.
And when it comes to those kinds of agreements, the districts will know exactly what they have and where it is. They enter into the agreements to (ideally) make everyone’s rights and obligations clear. If there’s a disagreement down the road, you need that documentation.