post count mismatch between multiple loops

In the page layout I return 5 of the most recent posts (from any category except stickys) at the top of page – as loop 1.

<?php
global $post;
$myposts = get_posts('category=-190&numberposts=5');
foreach($myposts as $post) : setup_postdata($post);
$do_not_duplicate[] = $post->ID; ?>
<!-- doing stuff for 5 of most recent posts from all categories except stickys -->
<?php endforeach; ?>

Further down in the page I break out the categories separately and want to display the 5 most recent posts for each category (without duplicating the posts in loop 1).. call them loop 2, 3, 4 and 5 – but I will just use one of them since the changes would apply to all once it’s working – at least I hope.

<?php
$standargs = array( 'posts_per_page' => 5, 'category' => 191 );
$standposts = get_posts( $standargs );
foreach ( $standposts as $post ) : setup_postdata( $post ); if ( in_array( $post->ID, $do_not_duplicate ) ) continue;
?>
<!-- just supposed to return 5 total posts in this single category -->
<?php endforeach;
wp_reset_postdata();?>

I can successfully (relatively anyway) do this except one issue somewhere in the code that I cannot seem to figure out where the posts_per_page, or showposts, etc are mismatching between the 2 loops.

For instance: if in loop 1 there are 2 articles for category 191, in the section lower in the page, loop 2 would only show 3 posts even though there are numerous other ones. I am fairly certain I am using posts_per_page wrong somehow. I’ve substituted posts_per_page with showposts and numberposts, it all does the same count issue where it will only show 5 total posts from that category in the entire page. I cannot use offset either because I cannot guarantee how many posts from a given category would show up in loop 1 and I need to have loop 2 show a definitive number of 5 posts from that category.
PS feel free to correct me on my other coding issues as well LOL.