This from that link is not correct "Companies trading on the OTCQB must follow standards to improve transparency and exclude companies that are most likely to be associated with stock promoters and other shady operators." https://www.investopedia.com/terms/o/otcqb.asp
Here's what otcmarkets has as benefits. Nothing about excluding promoters d G
"Current Disclosure. Make current disclosure available pursuant to one of the following reporting standards: a. SEC Reporting Standard; b. Regulation A Reporting Standard; c. Bank Reporting Standard; d. International Reporting Standard; or e. Alternative Reporting Standard."
Now, the OTCM doesn't require a company to be a SEC filer - the OTCQB is for pumping purposes only.
From the link you posted:
"As it has no minimum financial standards, the OTCQB includes shell companies, penny stocks, and small foreign issuers."
That is pretty funny - "as it has no minimum financial standards". SMH!