Great thread this, very "amusing" n sorry I've only just found it.
One of my wife's German girlfriends, now retired, used to be a professional German/English/German translator.
She once gave me the below (as it's 2 A4 pages long I've added it here as a .pdf).
To save those who perhaps wouldn't other wise be bothered to open it, here's a taster - it starts off:
"Dearest creature in creation
studying English pronunciation,
....... "
and as said, it goes on and on picking all sorts of "anomalies" which I believe will tax the most competent of English speakers within the 1st few lines - "corps and corpse, horse and worse" indeed!
View attachment Dearest creature.pdf
Someone above pointed out that some languages are "easier" to speak because once you've learnt the basic rules of what letter makes what sound, you always come up with the correct pronunciation. German is similar, and their "rules" seem to work fine in about 90+% of cases. But "Swiss German"? Another kettle of fish entirely!
I think that one of the "problems" with English pronunciation is the rich diversity of accents and dialects the "English" have, AND the fact that in reality, today's English is a diverse mix of inputs from many other languages, "classical" and non.
Regarding the point of "Received pronunciation" (and it's now less-common BBC variant/s) this was, I thought, started off because a bunch of "foreign Johnny" kings and queens invaded us centuries ago
Have fun with the above