First of all, people who understand Crypto market and have knowledge about it, won't expect to cross their altcoins more than 100x something. 100x altcoins are shitcoins or could be memecoin. And that could be luck game or gambling, which is another topic. But mainly we should focus good altcoins rather than shitcoin and supply won't matter you are choosing good altcoins. You should remember that, the project is only matter. Supply doesn't impect that much except in token price
agreed, 100x mostly just coming from shitcoin or meme coin where their market cap went from micro market cap to at least small or medium market cap making their coin rise so much but such coin also hard to encounter, though its quite frequent now that we are in for the bullrun for example the latest meme coin that hits in solana like maneki.
most of the coin that are invested by big venture like binance labs, coinbase and even OKX are all starting out at their deserving market cap at the very beginning and usually the rise is just about 2x - 3x its definitely nowhere near the 100x that OP is looking for but from my perspective that return is already good enough if compared with any staking programs out there with unexpectedly low APY for annual return.
these investment.
so in conclusion looking for 100x you can only do that by being a degen investing in whatever shitcoin there is.