OP you can find early memcoin gems from a lot of places. but you have to be very active and constantly checking all possible platforms for that. I think it is very difficult to find all of them. but if you find one good catch which give you a good profit then all the hard work and time spent searching for those will paid off.
along with twitter, there are some good telegram channels which share memeocoins and other upcoming tokens.
Twitter and telegram is really a good source of new memes on crypto but its too hard to trust memes this days be very careful theres a lot of honeypot memes on crypto If you are a meme hunter then you what it means. I find new memes on SOLANA chains almost every hour but too risky to buy them incase you cant sell or devs dump on your face. I just continue to accumulate well known memes like shib and bonk rather than buy new ones and crash later.
New memcoins are indeed very risky. but if someone is ready and willing to take the risk. then I don't see any issue trying his luck in these memecoins. because a lot of people got rich because of them. and they are very cheap. so you can get a lot of them in quantity for very cheap rate.