After the events of Wano wrapped up, Blackbeard, the Yonko, engaged in combat against Trafalgar Law, one of the members of the Worst Generation just like him, on a sea in the New World.

Source: https://gamerant.com/one-piece-blackbeard-pirates-devil-fruits/

Blackbeard's involvement in the Wano Country arc was kept to a minimum by Oda, which was a smart decision considering there were already two Yonko involved in the arc.

Source: https://gamerant.com/one-piece-manga-every-fight-egghead-arc-ranked/

He was the captain of the Beasts Pirates and one of the Yonko.

Source: https://gamerant.com/one-piece-villains-who-had-a-point/

Out of all the current Yonko, Buggy is definitely the weakest, and he is only considered a threat because of his reputation.

Source: https://gamerant.com/one-piece-yonko-defeat-ranked/

Rayleigh could fight against any Yonko in his prime, however, in his old age, he believes that he is not strong enough.

Source: https://gamerant.com/one-piece-strongest-pirates-roger-generation/