404 lot of odd entries

Should I be worried about this entries in the 404s log?
I configured my site map using Yoast SEO and I only have pages and posts listed.

however I have a lot, like A LOT, of similar entries like it:

/types-sitemap.xml
/wp-config.php2
/wp-content/plugins/contact-form-7/includes/js/jquery.form.min.js?ver=3.51.0-2014.06.20
/wp-content/plugins/revslider/public/assets/js/jquery.themepunch.tools.min.js?ver=5.3.0.2
/mother.php
/wp-cron.php?doing_wp_cron=1538552826.6152999401092529296875
/wp-cron.php?doing_wp_cron=1538549953.4882249832153320312500
/wp-cron.php?doing_wp_cron=1538551179.2332839965820312500000
/wp-cron.php?doing_wp_cron=1538544801.1275460720062255859375
/types-sitemap.xml
/wp-admin/admin-ajax.php

Also, several of them are from same IP in a limited range of time.