Not directly auditable circulating supply. Although in practice no one does this with Bitcoin, they just trust their node to audit (if they even run a node in the first place) like any Monero node runner. Monero uses complex cryptography and math to make sure there is no Monero that was created out of thing air (pedersen commitments). https://www.getmonero.org/resources/moneropedia/pedersen-commitment.html

Limitless supply. No hard cap. Has a tail emission. Although inflation is less than gold, and a constant (not a percent of supply), so in terms of % it is always falling closer and closer to 0%. And the bad part of fiat is that supply issuance is centralized, unpredictable, and arbitrary - all the opposite of Monero mining

You have to sync your wallet which can be annoying, but some wallets have background sync features. Or you can use a light wallet that connects to your own node that runs at home.