Those as such a useful explanation of types of pass-thru income. By the way, it mentions that Georgia Pacific — owned by the Koch Brothers —is a rare example of a very large business that operates as a pass-through entity.
https://www.nytimes.com/interactive/2017/12/20/us/politics/small-business-tax-cut-pass-throughs.html?hp&action=click&pgtype=Homepage&clickSource=story-heading&module=b-lede-package-region®ion=top-news&WT.nav=top-news