OP: " I followed up in the Case ID thread with a ton of documentation around Trademark submissions, Tax IDs, Federal EIN, Manufacturing Contracts and Invoices but keep getting denied"

You went about things the wrong way.

When you are the brand owner, you are selling your own brand of products. You ARE the manufacturer, and producer of the products you sell. There are no invoices to submit, no other companies involved, just you and your branded products.

Your product will have YOUR brand name on them, YOUR GS1 UPC's, YOUR Packaging, YOUR warranties, and YOUR COC necessary to sell in the USA, all in YOUR Brand Name.

Where you have the product manufacturer, and who you select to have your products made, is only your business.

You are no different than Sony or Kellogg's. You only see in what country the product was manufactured. You do not actually see where their products are manufacturer, or who they contract to make the products for them.

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Now that your application has been messed up with the wrong information, it will be a lot harder to get an approval to sell it on Amazon.

A good start would be making sure that your brand name dot com site is owned by you. A place where potential buyers can purchase the items. At least, you will be able to show Amazon that your brand really exists in the real world.