A little tutorial how to identify a MCreator Mod:

Step 1:
Download the .jar/.zip File

Step 2:
Open it with an unarchiver

Step 3:
Look if there are mcreator_[Random Stuff here].class files.
If there are no Files like this, go into the Folder (not the resources or assets Folder) and look if there are mcreator_[Random Stuff here].class Files or a Folder called MCreator.

Step 4:
If the mod is on PMC, report it.

Step 5:
Profit!