As for number of swaps, the AXS-WETH pool ranks at number one, beating USDC-WETH and WETH-USDT pool in the past couple of weeks. The AXS token is needed to play the AXIS infinity NFT game (which is probably why you can see a surge in number of swaps since early June.

There hasn't been much changes in terms of liquidity added to the pools with the exception of the 3rd week of July where a total of $322m being added into the USDC-WETH pool, by far more than any other pair.

The USDC-WETH pool is ranked number 1 in terms of volume for the past 10 weeks. USDC is the most traded stablecoin on the ETH blockchain. The second pool WETH-USDT is also a eth-stable paired pool and has been the second most traded, followed closely by the WBTC-WETH pool, the top two cryptocurrencies, and AXS-WETH has seen increase in volume recently. In terms of total volume, it looks like there is a decline since early June, probably due to poor market conditions.

To determine the top 5 pools on uniswap, I went onto https://v3.info.uniswap.org/home#/ and selected USDC-WETH, WETH-USDT, DAI-WETH, WBTC-WETH, and AXS-WETH as the top pools