The i.MX 8M Nano EVK comes with Murata 1MW module on board (https://wireless.murata.com/type-1mw.html ). It is a very capable module with dual band (2.4 GHz, 5 GHz) 802.11 a/b/g/n/ac Wi-Fi. It also has Bluetooth 5.0.
You can also buy separate Wi-Fi modules if you want. The EVK has a M.2 connector on board, which means you can also plug in a Murata 1CX module, which provides even higher performance with dual band 802.11 a/b/g/n/ac MIMO + Bluetooth 5.0 (https://wireless.murata.com/type-1cx.html ).