Looks like KC Metals has a history of acquisitions. First by G2 National in 2018 Then MBB investments merged G2 National with SmartFrame Solutions, also in 2018. G2 National website is active at http://g2national.com/ but connectors may not be available individually. Only trusses are shown.
I will use these suggestions for additions to 4specs.com if the manufacturers are not already listed. Share whatever “new” manufacturers you find that are not listed in 4specs.com
Mitek operates two websites for two brands. Residential construction wood framing connectors are found here https://www.mitek-us.com/. Commercial construction cold formed metal framing systems are found here https://aegismetalframing.com/. I updated 4specs so the wood framing sections in Division 06 link to the residential brand.
I added ClarkDietrich and Burmon to the wood framing sections as connector manufacturers.
SPAX makes screws, only. Manufacturing is in Germany. So they are not included in 4specs that focuses on products from US and Canada.