Hi @website-rob
The hidden svgs that appear immediately after the body are not part of the theme.
They are generated by WordPress itself since version 5.9, they should be part of the extra styles for Gutenberg.
If you want to remove them, you can use a PHP snippet as shown on this page https://github.com/WordPress/gutenberg/issues/36834#issuecomment-1048923664
Thanks so much for the direction. Worked like a charm.
For anyone else interested, use a plugin like Code Snippets and add:
remove_action( 'wp_enqueue_scripts', 'wp_enqueue_global_styles' );
remove_action( 'wp_body_open', 'wp_global_styles_render_svg_filters' );
Good Theme, Good Support – gotta like that. 😉