Regarding the shortage occupation list, find below the link https://www.gov.uk/guidance/immigration-rules/immigration-rules-appendix-k-shortage-occupation-list Please note the this list (might be) changed next year when the new system comes into force. More information will be available on the UK Home Office website before the end of this year.
How can I find a list of shortage occupations under the new point-based immigration system of the U.K.?
I learned about the post-Brexit point-based immigration system that allows foreigners to find jobs in shortage occupations. How can I know which occupation is in shortage and which company is in need of foreign workers in such an occupation?
The current shortage occupation list is here https://www.gov.uk/guidance/immigration-rules/immigration-rules-appendix-k-shortage-occupation-list and jobs are added from time to time. The new points-based system starts in January 2021 and therefore the details are yet to be announced.