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German is also up there. But Dutch is definitely more 'harsher' than German and almost akin to Semitic languages when it comes to their frequent usage of "kh". I do like the "kh" sounds in Germanic languages. They seem really exotic for Germanic standards, because you'd think "kh" sounds are only affiliated with Semitic languages. Btw, (Old) English used to have a "kh" sound as well. And its sound is still "fossilized" in the modern spellings of light, night, eight, etc . These words had a "kh", but probably more of a "gh", sound (as uttered in Arabic letter ghayn - https://en.wikipedia.org/wiki/Voiced_velar_fricative).
Hebrew and Assyrian Neo-Aramaic are fairly 'soft' for Semitic and Afro-Asiatic standards though. At least compared to Arabic. But I'm not sure if that's saying much.
Farsi (Indo-Iranian branch of Indo-European) does have a moderate amount of "kh":
Irish Gaelic too (Celtic):
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