Below are some websites with useful information on alternative economic approaches:
Promoting Economic Pluralim
OECD New Approaches to Economic Challenges
Exploring Economics
https://www.exploring-economics.org/en/
Rebuilding Macroeconomics
https://www.ucl.ac.uk/bartlett/igp/research-projects/2022/mar/rebuilding-macroeconomics
CUSP – Centre for the Understanding of Sustainable Prosperity
Ergodicity Economics