Western Europe

Another Western European rabbi with no kippah.

Another German-born Chief Rabbi of the British Empire, he wore a fancy hat like his predecessor in England.

Rav Kahn was the Chief Rabbi of France.  Unlike his contemporaries in England, he did not wear a hat.

A kabbalist, he did not wear a hat.  But neither did most of his Italian contemporaries.

Born in Hungary, Rav Schiller-Szinessy became a professor at Cambridge.  The only photo of him I could find shows him wearing a graduation cap.  I'm guessing it was not his everyday hat.

Even though he was born in Germany, Rav Adler became the Chief Rabbi of the British Empire.  Unlike his Western European bretheren, he wore a fancy "wheel cap" style hat, similar to those worn in Southeastern Europe.  But I suspect this has more to do with the British prediliction for fancy hats.

As we enter Western Europe, we see that Jews are less likely to wear kippot, even at the beginning of the 19th Century.