Sitemap Help

I work for a modeling agency that has 1,000s of individual model pages (model profiles). These pages are similar to a product page on an eCommerce site. We recently updated the pages to include Javascript so that they run faster.

It was my understanding that Google would still be able to read and index these pages, however since the new website launch Google has indexed 4,000 less of our pages. It seems they are no longer indexing our model profiles.

We use the SEO Yoast plugin. Would adding sitemaps of the model profiles be a solution to this problem? The only other problem is that we do not publicly list all of our models on our website and therefore do not want all of models to appear in search.

Here’s our website link to the model pages: http://www.models4tradeshows.com/models