Custom Taxonomy Filtering with WordPress

I have managed to integrate a custom taxonomies plugin that:

-Filters down the staff depending on what category is selected.

I want it to show that department first, and then the other departments beneath rather than that department all on its own (how it is now).

Here is the link: http://crippslawtest.co.uk/people/

I am guessing I need to add a second part to my loop, that says “And display all posts from all other categories afterwards”.

Here is my WordPress loop:

<div class="staffwrapper">
    <?php
    $args = array( 'post_type' => 'cripps_staff', 'posts_per_page' => 300 );
    $loop = new WP_Query( $args );
    while ( $loop->have_posts() ) : $loop->the_post();

    echo '<div class="col-md-3 spacetop">';
    echo '<a href="'.get_permalink().'">';
    echo '<img src="';
    echo get_post_meta($post->ID,'image',true);
    echo '">';
    echo '</a>';
    echo '<h2 class="staffname">';
    echo get_post_meta($post->ID,'staff_name',true);
    echo '</h2>';
    echo '<h2 class="staffrole">';
    echo get_post_meta($post->ID,'staff_role',true);
    echo '</h2>';
    echo '<h2 class="staffnumber">';
    echo get_post_meta($post->ID,'staff_telephone_number',true);
    echo '</h2>';
    echo '<h2 class="staffemail">';
    echo get_post_meta($post->ID,'staff_email_address',true);
    echo '</h2>';
    echo '</div>';
    endwhile;
    ?>
    </div><!--End of staff wrapper-->

I am thinking of writing an if/else statement “If there are less than 100 posts, add all the other posts in the loop”, Is that the right thing to do? How please? 🙂

Thank you!