>RaTG13 was just one of the COVID19-like samples they collected.

Name another. It's the only one with a direct relationship they ever found. Other teams have found similar since.

>We actually don't know what other similar genomes they found in the wild.

Yes we do. They published all their research in the open like most good scientific institutions.

>They used to publish a database of the genomes they found and worked with (though even then, some parts of the database were private). In September of 2019 they took the database offline.

They continued uploading all their sequences and research to both GenBank and Virological until December of 2020 when the CCP ordered them to stop due to Trump's rhetoric.

>What we do know is that in 2018 WIV proposed adding a furin cleavage site to a SARS-like corona virus. Two years later emerges COVID19, the only known SARS-like corona virus with a furin cleavage site.

Furin cleavage sites are a natural feature of multiple different coronaviruses:

https://www.sciencedirect.com/science/article/pii/S1873506120304165

Is all of this proof that there was no lab leak? No.

But it IS proof that you and many others continue to spread false narratives and misinformation in support of a politically motivated theory on the origin of COVID-19 which obfuscates legitimate attempts at finding the true origin.