Well obviously dogecoin is the biggest meme project in the crypto space. It was the first meme project that was created and it also has the highest market cap of all meme coins. The next meme coin that was a success was Shiba Inu which came many years later and basically was just a copy of Dogecoin with a different name. This year we had Pepe which made quite a few early investors rich.
We should not forget though that for every successful meme coin there are probably 10000 others that completely fail. So just stay away from shitcoins in general.