Salam alaikum

 

Islam reflects values and ethics in all its rulings and indeed names are one area in that. If you add that names are meant to describe things in reality and Muslim parents are to demonstrate the concept of us being servants to God then we understand the Hadiths of the prophet (peace be upon him) urging parents to name their kids like Abdulrahman or Abdullah, etc.

 

People do have the right to change their personal names and in this case I see that your original name does not make you feel comfortable, so it should be OK.

 

Now names like Noor or Karim that might match one of the Names of Allah should be permissible because Allah called his prophet (peace be upon him) in the Quran Ra’uf and Raheem.

 

As to ranks, it really depends on the culture you live in and for that reason I ask you to consult the scholars of the region you live in to have a better understanding of what that name means legally and socially.