gratography

The messy web provides some information. Have you considered some type of cobweb spider?

https://greennature.com/georgia-spiders/...

The egg sac on the back of the abdomen sure does say wolf spider. For example, the nursery web spiders look similar. However, they carry the egg sac in their jaws.

Wolf spiders are very difficult to identify by picture. First ask, is it big? Some of the hogna species are big, like the neighboring Carolina Wolf spider.

https://greennature.com/tennessee-spider...

Sure does look like a crab spider to me, too.

https://greennature.com/florida-spiders/...

Florida is filled with spiders throughout most of the year. Among those are many that build webs. Your picture shows a messy web like a sheet web.

https://greennature.com/florida-spiders/...

most probably a nursery web spider...that's the family, some species go by the common name fishing spider. There are a couple different fishing spiders that have the general look in your picture.

A more detailed macro-shot could help move it from genus to species level.

https://greennature.com/wolf-spiders/

very nice find. the Red-spotted Purple is one of over three dozen different brushfooted butterflies in Maryland.

https://greennature.com/maryland-butterf...

to add some more...Northern Paper Wasps are very common in Maryland. They have a variety of looks including a mostly solid color body like the specimen in the picture.

https://greennature.com/paper-wasps/

The all dark body along with the two dark spots on the top of the wings suggests a Slaty Skimmer
https://greennature.com/types-of-dragonf...

definitely in the skimmer's family, and the females are typically brown with the males having a more colorful body. The clear wings also tell you something.

Maybe a female darner, but I would have to see stripes on the thorax to be more certain.
https://greennature.com/types-of-dragonf...

Often the Cooper's Hawks fly around parks looking for birds and squirrels and such. They are very common.

https://greennature.com/hawks/