Downloaded Large Image Dataset That Is Not Organized And Simply #s As Names.

Hey I hope this is a good place to ask.

I downloaded a large image dataset from google/bing/Baidu, unfortunately all the filenames are generic and have no identifying Metadata.

Is there a program/software ideally free/open source if not cheap you recommend that can scan and reverse google image a directory of 100k+ photos download and fill in Metadata.

I especially would like to embed/rename photos to include the people in it, group the photos together for instance 10 photos belong to the same shoot/background with slightly different variations but they are all mixed in and impossible to separate/organize manually.

I appreciate any suggestions!