Sort the networks/buttons in Scriptless Social Sharing in your own custom order.

functions-alpha-sort.php

<?php

add_filter( 'scriptlesssocialsharing_networks', 'prefix_sort_networks_alpha' );
/**
 * A function to reorder the social networks alphabetically for Scriptless Social Sharing.
 * 
 * @author Robin Cornett
 * @param $networks
 *
 * @return mixed
 */
function prefix_sort_networks_alpha( $networks ) {
	asort( $networks );

	return $networks;
}

functions-custom-sort.php

<?php

add_filter( 'scriptlesssocialsharing_networks', 'prefix_sort_networks_custom' );
/**
 * A function to reorder the social networks for Scriptless Social Sharing.
 * Set a value for each network order. 0 is first.
 * @author Robin Cornett
 * @param $networks
 *
 * @return mixed
 */
function prefix_sort_networks_custom( $networks ) {
	$networks['email']['order']     = 7;
	$networks['facebook']['order']  = 1;
	$networks['google']['order']    = 2;
	$networks['linkedin']['order']  = 4;
	$networks['reddit']['order']    = 0;
	$networks['twitter']['order']   = 6;
	$networks['pinterest']['order'] = 5;

	uasort( $networks, 'prefix_set_scriptless_sort_order' );

	return $networks;
}

/**
 * Custom comparison function to sort the networks.
 * @param $a
 * @param $b
 *
 * @return bool
 */
function prefix_set_scriptless_sort_order( $a, $b ) {
	return $a['order'] > $b['order'];
}