Coinbase explains its token listing strategy in detail:

Coinbase has announced its token listing process, which is divided into three steps, covering legal, compliance and technical security audits. Tokens must avoid being classified as securities, ensure that there is no consumer risk or illegal activity, and pass technical audits. Projects that promise returns, low decentralization or lack of critical details will be excluded. The time for listing varies depending on the complexity of the project and the public attention. Usually, each review will not exceed 30 days, and tokens with large transaction volumes, wide holdings and high community support are given priority.