Image credit note
All images to have a credit shown at the bottom right, pulled from the WP media library.
For this feature to work, you must add your image credit to the Description field in the media library, as shown below.

Note: This affects all blocks that use an image, so it is important that you add a Description to any image that is uploaded, otherwise this feature will not work.
Standard WP image

Banner
Slider
Image Block

Yo!
Custom Card
Background Media Block
Heading
Conent
Section Block – with background image
Heading
Content