When many project arrive, also comes the coincidences among them.
It means that I have created a Project type custom field so, I cant identify the kind of project, some times severel custom fields doesnt apply to some kind of projects. For example some projects a support project need to identify , the first level and second leve Service desk Engineers but for a development project this is irrelevant.
I propose something like the permission report but for the project fields accordin to an enumeration called project type. Or a list of types of proyects where applies as is implemented for the issue custom fields

Option 1 sample:
|. Project Name|.Type 1|. Type 2|. Type 3|
|abc| yes | no | yes|
|bcd| no | no | yes|
|def| no | no | yes|