IMO, I think Dogecoin is already proven, and I have no doubt it will, But since there are many meme coins/tokens that were created nowadays like Shiba Inu, Floki, and many others I can't exactly say who will be the next to follow the Dogecoin footstep and survive in the future. the market is full of uncertainty and also remember that in crypto anything is possible and anything can happen without expectation so let us wait and see.
Of course, with the number of coin memes currently being launched such as Shiba Inu, Goma Finance and also Floki, of course they will continue to compete in the market, and it also really needs support from their team and developers to continue to survive in the market.
but in my opinion, of the many Memecoins that have been launched, the one that has the possibility to last longer in the market seems to be Shiba Inu.