The Virginia Plan was the proposal that was largely supported by larger states at the constitutional convention.
The Virginia Plan wanted to make it so that a states representation in the legislative branch was based on a states population. Larger states liked this idea, as a higher population means the more representatives they have in the legislature. The more legislatures a state has, the more they can influence the federal laws put into place. Smaller states hated this plan, as they felt it would give an unfair advantage to the larger states.