Those are pretty normal ingredients for nachos. I generally use cheap steak pieces instead of ground/minced beef. I assume nacho mix is something you put in the minced beef? I use refried beens (kind of a paste). I also often have sour cream for dipping, and some pickled sliced jalapeños on the side.
The biggest difference between my nachos and a lot of nachos is that I use a more traditional method of building each nacho one chip at a time, instead of dumping a bunch of ingredients onto a pile of tortilla chips. Then, into the oven to heat up and melt the cheese.
Nachos were invented in a bar on the Mexican side of the TexMex border. They weren't planned out -- they were something the bar owner tossed together for some customers using some things he had at the time. They have evolved a lot over the years, and there are hundreds of ways people and restaurants make them now.
CD