You might find it interesting to know that Calvin did not teach some things that many Calvinists now believe, and that Arminius did not teach what Calvinists claim he taught. I think it would be fair to say that the reverse is also true.
Could you be a little more specific? You might find it interesting that I haven’t read very much of Calvin. His name just happens to be stuck with Reformed theology much the way Arminias name is stuck on the Semi-Pelagius side.
Have you read through the Protestant’s Westminster or London Baptist Confession of Faith? I find that Protestants don’t really seem to have a clue about the founding fathers of Protestantism or what Protestant is all about. The TULIP was recent development but is not nearly as comprehensive as the confessions.