For this task, I have computed firstlty the best 10 assets by number of swaps to determine the most common of them. Afterthat, I have analyzed the most important ones in terms of total volume swapped. The results are below. The first table corresponds to the most common assets by swaps, and the second one about the volume.

Taking a look at both tablesc there are several assets that appear in both. However, USDC, Yeldly and Defly token are the most common if we take into account both metrics.