Nothing like a fancy title to gain respect... and it's a cheap way for the local authorities to reward characters that have done them a service!
It's quite a mixed bag of titles, and you will have to decide for themselves any hierarchy... does a Morza rank above a Sawai? I don't know, but if they are both used in your campaign world you will need to know who is the superior even if it is only for trivial reasons like arranging the seating plan for dinner.
If you are curious, a Morza is a princely title in Tartar lands whilst Sawai is a title of Indian origins meaning someone worth one and one-quarter of an ordinary man in Sanskrit... most holders were rulers and so it is possible that a Sawai ranks above a Morza, but only just. But that's the real world - in your alternate reality, your word is law.
It's a little bit of fun, especially if you are bored with Barons and Princes...