The 'first' Cloverfield was pretty decent. The other films with "Cloverfield" in the name, like 10 Cloverfield Lane and The Cloverfield Paradox, were decent movies on their own. However, those films didn't have much directly related to Cloverfield until the last 10 minutes. While they are decent movies on their own, it seemed like they just tacked on something related to Cloverfield in the last couple minutes so they could use the name for marketing. As those two films are very different movies from Cloverfield, they likely would not have brought in the larger audiences to see them if they were just released on their own as they were. Tweaking the endings in the last few minutes just to get the tie-in so they could use the Cloverfield name allowed for them to hit a larger audience and also furthered the story of Cloverfield slightly to keep interest in that story in case they were to release a real sequel to it.