My application got approved after three weeks of applying, I applied in Munich Germany , as self employed portfolio manager and Author, submitted documents: professional portfolio, approve of address ( they requested National ID for that as in German ID your home address is written in back of the ID card) ,

Official portfolio PDF document from my Broker showing my holdings (worth around 7 million Thai B ), a photo and a copy of my passport. After submitting in two weeks they requested Business registration (Gewerbeanmeldung) I replied with an official letter that I don’t have a business registration in Germany and explained my work nature that doesn’t require a formal business registration and as how flexible it is that perfectly fit for a digital nomad , as alternatives for the business registration I submitted my income reports since I started managing my portfolio and my tax return reports showing that im paying taxes and I am legit regarding my income and my Tax record.

After my application experience I believe that it really depends on the consulate where you are applying and their flexibility. Not all are for 100% the same.