The block of code below returns a list of all $handles.

global $wp_styles;
$handle = $wp_styles->registered[$handle]->handle;
echo $handle;

If the code below is executed, it returns the all the values. It does not however return “abc” for example that was included in the first set of results above.

if ( wp_style_is( $handle, 'enqueued' ) || wp_style_is( $handle, 'queue' ) || wp_style_is( $handle, 'registered' ) || wp_style_is( $handle, 'done' ) || wp_style_is( $handle, 'to_do' ) ) {
   echo $handle;
}

Why does the first block return it but not the second?