Hi @thurmc,
Welcome!
The dependencies you are not seeing in the tree might be dependencies of the plugins you have applied. These are required by Gradle itself to run the build with plugins. So they are downloaded early before the actual build starts, because they are needed to run the build.
If you produce a build scan with Gradle 6, there should be an additional category in the build scan called “Build Dependencies” which would show you these dependencies.
With earlier Gradle versions, you can try running the buildEnvironment
task from the command line.