Migrate announcement items to modern news posts

I have a lot of classic announcement items in SharePoint on premise that I would like to migrate to modern news posts in SharePoint Online.

I have found descriptions of how to modernise classic pages automatically (https://docs.microsoft.com/en-us/sharepoint/dev/transform/modernize-userinterface-site-pages-dotnet), but these announcement list items seem to be something else than classic pages. I also have other list item types that now need to become modern pages, like FAQ items.

Does anyone know about a way to migrate classic list items to modern pages automatically?

I have access to ShareGate, so I can use that tool to fix the metadata, such as dates, authors, promoted state etc later. Often it is possible to map to another content type in ShareGate, but unfortunately I have not found any way mapping of a list item to a modern page in ShareGate either.