Heterodox Economics Movements I Don't Pay Much Attention To

As I understand it, each of the following had advocates around the globe in the first half of the twentieth century:

• Georgism (I have read Progress & Poverty)
• Silvio Gesell (Mentioned by Keynes in Chapter 23 of the General Theory)
• Social credit (Keynes also mentions Major Douglas in Chapter 23 of the General Theory)
• Technocracy

I gather remnants of their advocate organizations still exist. But I gather they have little representation among academic economists.