When I speak against OSAS and it's beliefs, most do not object to those beliefs. Why? Because that is where I had gotten them from. Yes, there are different levels of OSAS.
Personally, I believe in the Biblical View of "Conditional Salvation" that teaches that a true believer who is saved will naturally bring forth a life full of holiness and fruitful works. Now, do not misunderstand me, works are not done to be saved, but they are merely the evidence that you have been saved when one repents and accepts Jesus Christ as their personal Lord and Savior. If a believer sins, they need to immediately confess that sin and forsake it and continue to walk uprightly with their Lord. If a believer continues to abide in unrepentant sin that leads unto death (lying cheating murder etc.) then they are not saved.
So seeing I hold to the Biblical View of "Conditional Salvation", I am naturally against all forms of OSAS. However, that said, I believe that only those who hold to "Conditional Salvation" and "OSAS Lite" are true Christians (or my brothers). I believe all other forms of OSAS are teachings from the pits of Hell. Anyways, there are three major types of OSAS.
OSAS Type #1:
Classic OSAS (Once Saved Always Saved) which says you can practice unrepentant sin that leads unto death (Such as lying, murder, hate, fornication, etc.) and yet you can somehow still be saved.
OSAS Type #2:
Mid Range OSAS says that you cannot practice sin otherwise you do not know God. However, abiding in an occasional or small unrepentant sin and then dying in that sin will not necessarily send you to Hell.
OSAS Type #3:
OSAS Lite teaches that you if you practice or continually abide in unrepentant sin then you were never saved to begin with. Meaning that a true believer is characterized by them living righteously. So falling away from the faith would be impossible (Despite the many verses that talk about such a thing).
Your gospel does not understand grace, if you cannot understand grace, then you have no concept that righteousness is a position not personal performance, if you have no understanding of righteousness, then you are not a partaker of the divine nature.
You are the one preaching a false gospel Jason.