I’ve used the format mentioned here: Blocks | Kirby CMS
How do I reference it in the blueprint?
This default configuration will apply whenever you add a blocks field to your blueprint. Since it is a default, no further settings are necessary.
That’s great! Is there a way similar to field options where I can have multiple block configurations defined in the config and then chose which block config I want to use in the blueprint?
(Like this solution: Select/Multiselect options from config - #3 by adamkiss)
No, but you can define multiple block field configurations and extend them in your blueprints, just as with any other field/section etc.