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Mandatory, can’t be disabled. It’s what helps you check if the Depth buffers and everything related to them and ReShade are working correctly, and a simple HUD mask shader, which disables the rendering of shaders entirely to the selected HUD parts.

Color correction, contrast
& post effects (bloom, …)

Focuses on effects that changes colour, contrast, 2d lighting and adds post-effects such as bloom, chromatic-aberration, and other camera-related effects.

Color correction, occlusion-effects
& effects with depth buffer (AO, DOF)

Usually comes with every copy of RTGI or any shader made by PGHub / MartyMcFly (Pascal), the package available in the GitHub includes the necessary files to run the previous ones (Incase you don’t want to / didn’t buy a Patreon sub) and also includes a few good free shaders. They focus also on color-correcting of the game, but most specifically on occlusion-effects and effects that heavily uses the depth buffer (Stuff like Ambient Occlusion, Depth of Field) you’ll find it mostly here.

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Effects made by a different author, same goal than SweetFX, but with a more photography-related terms and approach to how it is done.

Head-Mounted Devices (VR Headsets)
& 3D-Monitors

Effects made specifically for Head-Mounted Devices (VR Headsets) and 3D-Monitors. Helps ReShade work better with those titles and provides tweaks that might become handy while editing the image and visuals of a VR-game.

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Effects made by the same author of Depth3D, however completely unrelated to 3D devices and projection.

Effects and tools used in real photography

Set of effects made to replicate effects and tools used in real photography, such as Depth of Field. Very useful for people which are already versed in photography, not much for casual photographers and newbies to preset making.

2D scenes & environments

Effects that might help with shadows and depth of 2D scenes or environments with no depth buffer.

“eye-adaption”
& UI detection

Effects focused on “eye-adaption” and detection of UI elements in games to help with masking.

Stylization

Effects that focus on the “artistic” side, heavily on stylization. Includes stuff such as a Comic shader, posterization shader, and a few overlays to help with scene composition.

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Effects that mostly focus on a few elements related to photography and projection of the screen.

General image enhancement

General effects related to image enhancement and tweaks.

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Another general assortment of effects that can do various things to an image.

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Port of a few effects made for the RetroArch/Libretro emulator framework/interface. Useful if you want an effect from it used in a standalone emulator.

Chroma-Key and image-manipulation

Lots of effects focusing on Chroma-Key and other related image-manipulation effects.

Funny image distortion

Effects that distorts and manipulates the images in funny ways.

In-game photography

Another set of effects designed for in-game photography.

Head-Mounted Devices (VR Headsets)

Another set of VR / HMD-related effects to improve sharpness and clarity without being too advanced or sacrificing performance.

Old versions of ReShade

Effects from old versions of ReShade. Only recommended to use if the preset has something from it enabled, otherwise, other effect sets or shaders can do the same thing or more in a better way.