Monero has no capped supply. Instead, it uses tail emission 0.6 XMR per block forever meaning supply is infinite, but inflation decreases toward zero.

Litecoin is the only mid cap I know of with a fixed supply.

True. It does not have a capped supply.

No

But I would argue that is for the best, unlike Bitcoin it's purpose isnt really to just be a store of value so greater emphasis is put on keeping up miner incentives, which I would argue is good for security. I could probably go on for hours about random X and all of my thoughts on it, and how it fits in with the incentive structure of monero. Still, if you're looking at cryptocurrency as an investment, Bitcoin probably would be the best option but if you don't have another way of accessing non-kyc coins in your area, you can always get monero and then atomic swap for Bitcoin to ensure there isn't a link between you and your coins. Also, running your own node and mining is super easy and straightforward with monero so I'd recommend doing that as well. There is essentially no good reason to not run a monero node if you're using the protocol at all.