Which cryptocurrencies are audited by Kraken?

As a financial professional with a keen interest in cryptocurrencies, I often find myself wondering about the rigor and transparency surrounding various digital assets. One of the most established and trusted crypto exchanges, Kraken, is renowned for its security and strict auditing processes. However, I'm curious to know precisely which cryptocurrencies undergo these audits on Kraken's platform. Are there specific criteria that these cryptos must meet to be eligible for auditing? Or does Kraken audit a wide range of assets? Clarifying this information would greatly enhance my understanding of the exchange's practices and potentially guide my investment decisions.