Can’t FIND my own Shortcodes

I was hoping to find a plugin that would give me a reminder of MY OWN shortcodes that I created. This APP didn’t provide much help.

I created several shortcodes in the Appearance > Theme Editor > functions.php

This app can’t even find those. I went through all the options and none of them displayed the shortcodes I created below. Yes, they do work in real-time.

// SHORTCODES 
function year_shortcode () {
$year = date_i18n ('Y');
return $year;
}
add_shortcode ('year', 'year_shortcode');
function month_shortcode () {
$monthyear = date_i18n ('F');
return $month;
}
add_shortcode ('month', 'month_shortcode');
function yyyymmdd_shortcode () {
$yyyymmdd = date_i18n ('y-m-d'); return $yyyymmdd;
}
add_shortcode ('yyyymmdd', 'yyyymmdd_shortcode');
function monthyear_shortcode () {
$monthyear = date_i18n ('F Y');
return $monthyear;
}
add_shortcode ('monthyear', 'monthyear_shortcode');
function day_shortcode () {
$day = date_i18n ('l');
return $day;
}
add_shortcode ('day', 'day_shortcode');
// END SHORTCODES