They're not necessarily ethnic, some people just have funny names:
https://theawesomedaily.com/50-funny-names-that-are-so-unfor...
https://www.newidea.com.au/funny-names
In your opinion just how genocidal are these articles on the pyramid of hate?
The first list you posted has a bunch of "funny" East Asian names. That stuff was racist in "Sixteen Candles," there's no excuse for it in a modern workplace.
I'll be frank- and I know that I'm risking the mistake of reading just what I want to read-, I think that those "counter to creating an inclusive workplace" and the general tone ("serious collective failure" etc.) are just nods to the social justice culture, and are meant to appease and concede some ground to the opponent. I don't think (also because it is clearly stated elsewhere in the same post) that there was anything intrinsically racist in that list, or anything that made it substantially different from those examples above. Apart from the obvious difference that these are customers, and it's not nice to secretly make fun of them.