Possible to add the title of a custom gutenberg block to the edit screen?

I want the title of the block to show after it’s been added so that they can see which blocks have been used.

This information is already available and displayed in multiple places, for example

When hovering over a block:

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In the sidebar when the block is selected:

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In the breadcrumb bar at the bottom:

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And highlighted in the block navigation list dropdown menu:

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If the goal is to be able to recreate the layout, you could set up a template for that post type when calling register_post_type so that it’s pre-filled and they just modify it how they like. You can even set them up as placeholders, or force the layout and blocks available.

You can also copy paste the blocks all at once from another page. Just shift + click to select multiple blocks then copy paste. There’s also a copy all content link in the top right 3 dot menu

You can also use plugins such as the site editing plugin from Automattic, and others, to provide pre-filled options