Smart Image Resize (SIR) - exclude image sizes from being altered

sir.php

// Exclude Image Sizes from SIR Plugin
// List all sizes to be excluded in the list below
add_filter('wp_sir_exclude_sizes', function() {
    return [
        'woocommerce_gallery_thumbnail',
        'thumbnail',
        'medium',
        'medium_large',
        'large',
        'news_grid',
        'news_large'
    ];
});