Sorting Coinbase token pairs alphabetically I only had to get as far as AAVE.
> The firm, originally named ETHLend, raised $16.2 million in an initial coin offering (ICO) in 2017, during which time it sold 1 billion units of its AAVE cryptocurrency - originally named LEND. [1]
Coinbase doesn't publish their standards or approaches, and frankly, it's very much in their interests not to declare something a security. I suspect their process is less than rigorous.
> Coinbase doesn't list digital assets that could be considered securities! Someone needs to actually point to what they're doing wrong.
I believe I linked to the document above :) maybe their lawyers would like to give 'er a skim?