Strands of Libertarianism, by Arnold Kling
Tyler Cowen lists five major strands, taking a swipe at one.
3. Mises Institute nationalism. Gold standard, a priori reasoning, monetary apocalypse, and suspicious of immigration because maybe private landowners would not have let those people into their living rooms.
My minor strand I call civil societarianism. Collective institutions that are separate from government--good. Government--bad. Activities that can be sustained through profits or philanthropic donations can be presumed beneficial, from a utilitarian-ish perspective. Activities that require taxation are sometimes beneficial in theory, but public choice issues make them much less beneficial in practice.