Total Views per Author?

If this is for internal use that I would use an analytic program to get that information like google analytics.

Its simple to do what you whant!

Just aply this trick : https://www.wpbeginner.com/wp-tutorials/how-to-track-popular-posts-by-views-in-wordpress-without-a-plugin/

But at the end you dont call the top post views! You change the functions from the guys of wpbeginner.com with this one:

<?php
$popularpost = new WP_Query( array( 'posts_per_page' => 4, 'meta_key' => 'wpb_post_views_count', 'orderby' => 'meta_value_num author', 'order' => 'DESC'  ) );
while ( $popularpost->have_posts() ) : $popularpost->the_post();

the_title();

endwhile;
?>

If you see, I add just this orderby author near meta_value_num because I apply the role of this function from WordPress Codex:

https://codex.www.ads-software.com/Class_Reference/WP_Query

You will display posts sorted by meta_value_num with a fallback to post author, in a descending order.