What is the difference between Chevrolet Blazer models?

I recently bought a four door 1995 Chevrolet Blazer which I am pretty happy with so far. On the side there is a tag that says LT. I have seen other Blazers like mine with an LS or nothing at all on the side. What do these things stand for and how many different Blazer sub-styles are there?|||that is just the trim model the LT I think is the highest trim then LS then the one with nothing is the bottom. The higher trim model comes with more options stock as with the other you have to order them. Say the LS has power locks but the LT comes with power locks, windows, and seats! hope that helps|||Just the trim, color of dash boards and all that good stuff. nothing important.