In modern times, many ministers preferred to be called "pastor" because they objected to being called "Reverend", which was the most common term used. This terminology us used quite aside from biblical terminology.
My personal view is that bishop, elder and pastor are essentially the same thing....referring to the overseer of the local congregation.
I don't really get up tight about what people call me, or called me, whilst I am serving as the pastor of a local church.
I have a doctorate, but don't care to be called "Dr." Whilst teaching, I asked the students to call me Jim...that is my name!
Respect does not come with a title, it comes from behaviour behind that title.
In every biblical reference to these titles, there is a context and local understanding. We best search this out when reading those particular scriptures, rather than try to fit them into modernity.
The use of the word "apostle" in some New Testament books have nothing to do with the traditional apostles recognized in scripture as a special office of those who actually had seen Jesus....Paul being the one exception, but accepted by Christ as such....In this sense, it may go beyond the gifts expressed by the title, and signify a special office appointed by the Lord. Rev 21: 14 seems to recognize the 12 apostles, which seem to align with the 12 tribes of Israel. These apostles were foundational, suggesting they were the foundation of the local churches.
We can enter into all kinds of debate over such titles, but I think that misses the point. There is so much more edifiable material to get excited about.
Cheers,
Jim