In reply to Justin Tadlock.

Justin, thanks for the quick reply!

That was just the ticket, I figured there were similar filters as Blocks. For those looking to remove those they are in ...\wp-content\plugins\gutenberg\lib\client-assets.php

Looking forward to seeing your plugin grow.

[code lang=text]
// register_block_pattern( 'core/text-two-columns', gutenberg_load_block_pattern( 'text-two-columns' ) );
// register_block_pattern( 'core/two-buttons', gutenberg_load_block_pattern( 'two-buttons' ) );
// register_block_pattern( 'core/cover-abc', gutenberg_load_block_pattern( 'cover-abc' ) );
// register_block_pattern( 'core/two-images', gutenberg_load_block_pattern( 'two-images' ) );
// register_block_pattern( 'core/hero-two-columns', gutenberg_load_block_pattern( 'hero-two-columns' ) );
// register_block_pattern( 'core/numbered-features', gutenberg_load_block_pattern( 'numbered-features' ) );
// register_block_pattern( 'core/its-time', gutenberg_load_block_pattern( 'its-time' ) );
// register_block_pattern( 'core/testimonials', gutenberg_load_block_pattern( 'testimonials' ) );