Hello @yabdali,
Thank you for contacting Rank Math support.
Please note that WordPress doesn’t use the image title you add in the Media Library as the title attribute for images. That title is used for the attachment pages and there is no variable to get it. The title attribute must be added in the image settings in the editor. If you don’t add that manually and have enabled the Add Missing Title attributes option, then our plugin will add the title attribute using the format you have set.
Since the images are being added with a dynamically generated product list, you won’t be able to add the title attribute manually to them and must use the global format of the Add Missing Title Attributes option of our plugin.
Hope that helps and please do not hesitate to let us know if you need our assistance with anything else.