I see that our issues are hermeneutics. In Matthew 25:32 the term “nations” represents all the individual people living in the world. How do I know this? Because Jesus gives the reasons for their separations, starting with v35. The language is all personal. You visited, you gave me, you clothed me. These are personal acts of individuals not the acts of Governments. The government does not visit you in prison as a sign of a righteous attitude.Hi , and in Rev 1:6 , there is the Greek word for KING/BASILEUS and see G935 !!
PRIESTS/HIEREUS , G2409 !!
Both words are in Rev 1:6 !!
As far as Matt 25:32 , uses the Greek word NATIONS/ETHNOS !!
As far as Rom 11 , goes , there are many Dispensationalists , that go every which way on Rom 11 !!
How Rom 11:21-22 is believed !!
Are we Grafted into an Olive Tree ??
Or are BAPTIZO/PLACED into the Body of Christ , 1 Cor 12:13 ??
I , OPT for 1 Cor 12:13 !!
If you believe in GRAFTING you can not be Pre-mil , but A-mil !!
In today’s world you are correct, there are many versions of dispensational theology. I happen to take six semester hours in college on the subject and have developed my own interpretation based on my own study. So for me to explain all this to you in so little space would not be practical. But what I will do to help bring you up to speed on hermeneutic principles for prophetic interpretation is recommend a book called “The Interpretation of Prophecy” by Paul Lee Tan. I believe it is still available at Amazon.com.
It is my view that I am both grafted into the olive tree and baptized into the body of Christ, because I do not believe God is running two different programs. God's program is one and includes both the Church and Israel as separate entities all parts of a single plan.
Eschatology is another one of those topics that requires a great deal of study and background to get it right and then no one is really sure of that. Because of this, most people rely on their spiritual leadership who hopefully has had some training on this topic at seminary. As I have stated in my book: “There are no contradictions in Scripture. For biblical truth to be true it must agree with all other biblical truth.” And therefore, we must rely on the Holy Spirit to help us see that truth. God bless in your continuing pursuit of that truth.