Mostly resolved. See second post. Just need to figure out how to make attachment pages be in the anchor link without being injected into the lightbox.
When using
Tiled Gallery Carousel Without JetPack and using WordPress's wp_attachment_pages_enabled set to 1, the lightbox states:
The requested content cannot be loaded. Please try again later.
When 'Tiled Gallery Carousel Without JetPack' is disabled, the lightbox shows the attachment page instead of the image in a lightbox. Odd but rather interesting as this allows you to use ARI Fancy Lightbox with native WP comments. But images cannot be zoomed in due to using WP's attachment page view.
This happens on a fresh WordPress install having disabled all plugins except Tiled Gallery Carousel Without JetPack + ARI Fancy Lightbox, use the default WordPress theme, and having wp_attachment_pages_enabled set to 1. The lightbox for Tiled Gallery Carousel Without JetPack is disabled. It took a few hours to pin down this scenario. When wp_attachment_pages_enabled set to 0 the lightbox works. But I like having the WP attachment page as it gives a way for users to be able to create native WP comments on those images. Tiled Gallery Carousel Without JetPack bypass's the forced image option, but I was able to override Carousel by modifying various files to link to the image. Sadly though the image link to the attachment page for comments is not possible in this scenario.
Either I can have a functioning lightbox with no image link to attachment page (comments/metadata) or have the gallery be able to link to those attachment pages (that show comments, author, upload date, description) but breaks the lightbox.
Perhaps there is a scenario I'm not seeing? Regarding comments not only do many people avoid Facebook, I'll be able to have on-site notifications for native WP comments which makes for a far better user experience. Most WordPress sites have wp_attachment_pages_enabled set to 1 as this has been the default until recently.