Which of these languages is the least logical?

[Mr. Smith]

English by a narrow margin.

German seems prone to a good number of syntax issues as English, and it has so many conjugations and arbitrary article/adjective changes.

However English wins by lack of a "you" in plural, so many borrowed words, inconsistent spelling, and if one thinks about it "split infinitives", oh and accents you can't see in words like cliche or naive.

[Mr. Smith]

Yes dialects, but that's not an official one and it's going to confuse anyone else.

And then there's the death of "thou"/"you" difference.

English sentence structure is actually quite bizarre to though.

German isn't illogical inherently,it's more that it tries too hard to be logical and sets up so many rules that it does end up looking that way.

The Romance languages suck at hypotheticals though and that's important to have.