The Sharif of Mecca was a high placed functionary of the Ottoman Empire for many years and as such there is a Listeria list for the Sharif of Mecca. The point of these lists is that the quality of the information we maintain about the Ottoman Empire is not of a high quality. The Ottoman Empire existed longer than the Roman Empire, covered a larger expanse and it is not yet one hundred years ago when it came to an end.
I looked into lists of functionaries on several Wikipedias and they are not consistent. So I created Listeria lists and as people add things to Wikidata, these lists are updated.. that is the theory and I am happy that this functionality has been restored.
The best bit is when other people take an interest as well. A new functionary is added; ولي الدين رفعت باشا and he will get his place in the list .. Google translates it into "Wali al-Din Rifat Pasha" and hey we can bring things to the next level.
Lists like these should be stable and they do entice cooperation. It is why I am so grateful that Magnus spend some time reviving the functionality.