Not sure of the exact terminology to use for this question, but here goes…If you mouse over the photo and learn more for posts of the wp show post grids (in my case, it would be for itineraries that were prepared with a custom post type), the title of the post appears, but if you mouse over the actual tour title (for instance on my Chile page https://www.savacations.com/destinations/chile-tours-travel/ it would be Santiago and Atacama, Santiago and Easter Island, etc.) the title of the post does not appear. Is there a way to get the mouse over to work for tour titles as well? I believe that this would be good for SEO.
If so, I don’t think it’s necessary. There’s already a title below it. Wouldn’t a duplicate title when you hover the mouse on the image be redundant?
Plus I don’t think it’s necessarily good for SEO as the images already have an alt attribute to describe then and you already have an h3 tag w/ an itemprop="headline" attribute which is the actual title of the post.
But if you must still do it, you can hook in the post title on the post-image element same way you did the + sign on hover and style it with CSS.