Add User Role Column to Users List

<?php
if ( ! function_exists( 'scseed_add_role_column' ) ) {
    function scseed_add_role_column( $columns ) {
        $columns['scseed_role'] = __( 'Role', 'scseed' );
        return $columns;
    }
}
if ( ! function_exists( 'scseed_show_role_column' ) ) {
    function scseed_show_role_column( $value, $column, $user_id ) {
        if ( 'scseed_role' !== $column ) {
            return $value;
        }
        $user = get_userdata( $user_id );
        if ( ! $user ) {
            return '&mdash;';
        }
        $roles = array_map( 'ucfirst', (array) $user->roles );
        return esc_html( implode( ', ', $roles ) );
    }
}
add_filter( 'manage_users_columns', 'scseed_add_role_column' );
add_filter( 'manage_users_custom_column', 'scseed_show_role_column', 10, 3 );