The most popular and well-known cheat for Minecraft 1.16.2 is XRay, which allows players to see resources hidden under the earth. These textures are indeed a cheat, but you cannot get banned for them since their use is not a violation.
An updated version of Xray for Minecraft 1.14.3 is already available for download! Now transparent textures can be used on the new version of the game. This cheat is completely legal, because it is a mod that simply removes the texture of the earth, stone and other unnecessary blocks.