This is Bryan, thanks for helping out once again. I have a few more of these projects once this one is complete. I know it's confusing but you will do well.
The "type" column is default naming.
simple = individual products by size, color
configurable = the base product that represents all of the simple products, this is why some fields are left blank in the configurable row.
Please do a one or two products and send for me to review before doing the whole project.