Some plug-ins tested so far.
Harpex: working. https://harpex.net
IEM: working. https://plugins.iem.at
Matthias Kronlachner: working. http://www.matthiaskronlachner.com/?p=2015
Noise Makers: working. https://www.noisemakers.fr
Blue Ripple Sound: NOT working. http://www.blueripplesound.com/product-listings/pro-audio
Google Resonance Audio Monitor: NOT working. https://github.com/resonance-audio/resonance-audio-daw-tools/releases
For the non-working plug-ins, the solution is to insert them in a Plogue Bidule plug-in. https://www.plogue.com/products/bidule.html