What are the scientific analyses for the origin of covid-19?

This topic can be very confusing.  Therefore, I will just simplify it.

There are currently 2 scientific analyses to trace the origin of covid-19.

China used genome sequencing (Haplotype analysis) which categorizes covid-19 virus into 2 strains and 5 generations.  China scientists traced the ancestral H38 back to the US and the US had all the 5 generations in its early outbreak.

https://gnews.org/123001/

Please watch the video below for the Taiwanese virologist's explanation about the basic understanding of Haplotype analysis.

Cambridge University scientists used Phylogenetic network analysis which categorizes covid-19 virus into 3 strains (A-type, B-type & C-type).  Cambridge University scientists discovered that the ancestral A-type virus was predominantly found in the US.

http://sg-stock.blogspot.com/2020/04/cambrigde-university-got-caught-for.html

We should understand by now that when an ancestral virus type is predominantly located in a region, that region must be the origin of the virus.  The 2 different scientific analyses point to the US as the origin of the virus.

Malaysia also used Haplotype analysis for its covid-19 analysis and discovered the presence of all the 5 generations of covid-19.

https://www.thestar.com.my/news/nation/2020/03/27/health-ministry-detects-five-039generations039-of-covid-19-cases-linked-to-tabligh-cluster