I purchased a WeatherTech bed liner for my Lightning Lariat EB and have been very pleased so far. I also purchased WeatherTech floor mats at the same time. See the following:
2022 Ford F-150 Lightning Truck Bed Liner & Tailgate Protector - TechLiner | WeatherTech
2022 Ford F-150 Lightning TechLiner is a durable and custom-fitting bed liner for trucks that protects your truck’s bed from scratches, dents & paint damage.