This is very well documented in the early reporting of the unfolding pandemic but, like a lot of other info, reporting on the two virus configurations was dropped.
It is hard explain how two similar but separate and distinct virus configurations of a novel, previously unknown virus - both ideally adapted for extremely virulent, highly contagious human transmission could appear out of the blue with no prior history in the field.
The only real credible explanation is that the two virus strains were either different iterations on the bio engineered virus or, more likely, the two virus strains represent different development paths for the virus targeting different applications or population/ethnic demographics. The two virus could also have been developed as a terror weapon whereby one strain was extremely deadly while the second was not as bad with a goal to optimizing fear with a goal of causing maximum social and economic disruption with minimal fatality, which is precisely what we saw unfold over the last year
you are correct - the “S” and the “L” strains. So the question is, are the two strains the smoking gun proving in-lab coverup of an accidental creation, or proving deliberate splitting of an intentional creation?:
“Population genetic analyses of 103 SARS-CoV-2 genomes indicated that these viruses had two major lineages (designated L and S), that are well defined by two different SNPs that show nearly complete linkage across the viral strains sequenced to date. We found that L lineage was more prevalent than the S lineage within the limited patient samples we examined. The implication of these evolutionary changes on disease etiology remains unclear. “
https://academic.oup.com/nsr/article/7/6/1012/5775463