I generally know some items in this type of list, but there is always something new to me. They did get the symbol for the interrobang wrong though. Typographically it looks like this, usually sharing a single dot, although it is not possible in all typefaces, as seen above.
‘petrichor’ is one of my long term faves —
I already knew 10 of them, but have never seen the interesting joint symbol ?! that you outlined above.
Very insightful, interesting article.