Hi @Misha Anker ,
Thanks for the additional info. Yes, SharePoint is supported for AI enrichment. To set up the SharePoint indexer, you'll need to perform some tasks in the Azure portal and others through the preview REST API. To accomplish this please see this document: https://learn.microsoft.com/en-us/azure/search/search-howto-index-sharepoint-online#functionality
Hope that helps.
Best,
Grace