I got back into zombies with BO6 and remembered how good the perk jingles were and created my own tier list about them
Mine: https://imgur.com/a/Tq3tYJS
Feel free to make your own, curious to see what the rankings are without bias
Link: https://tiermaker.com/create/call-of-duty-zombies-perk-jingles-up-to-bo6-16999586
The links to the jingles are in the description near the top of the page.