It looks like you are interested in populism. Well, you might want to take a look at:

Team Populism: populism.byu.edu

Populus — Rethinking Populism: http://populus.ics.ulisboa.pt/

Demos: https://demos-h2020.eu/en

Extremism & Democracy: https://standinggroups.ecpr.eu/extremismanddemocracy/

Jacobin: jacobinmag.com

Populism (Journal): https://brill.com/view/journals/popu/popu-overview.xml

CARR (Centre for Analysis of the Radical Right): https://www.radicalrightanalysis.com/

Populism (Populism Specialist Group of the Political Studies Association): https://issuu.com/populism