*Don't use 17^3 and 33^3 size LUTs for anything but field monitoring. If you can, AVOID usage of 17^3 size LUTs at all. 17^3 size is extremely small for most of modern 'flat' log wide gamut sources. Even 33^3 is not always enough. ALWAYS USE 65^3 SIZE LUTS FOR POST PRODUCTION!!!
In LUTs with BT1886 output, 18% gray color (0.18 code value in Linear) roughly mapped to 10 nit for Amaryllis and 10,5 nit for Middlemist.
In LUTs with P3 output, additional “dark” surround compensation was added for better visual match between Gamma 2.4 display devices (for example, regular SDR video monitor) watched in dim surround and Gamma 2.6 display devices watched in dark surround (for example, theater projection).
ALEXA LogC3 Wide Gamut V3
ALEXA LogC4 Wide Gamut V4
RED Log3G10 WideGamutRGB
Panasonic V-Log V-Gamut
DaVinci Intermediate Wide Gamut*
Sony S-Log 1 S-Gamut
Sony S-Log 2 S-Gamut
Sony S-Log 3 S-Gamut3.Cine
Sony S-Log 3 S-Gamut3
BMD Film Gen5 Wide Gamut Gen5
BMD Film Gen1 BMD Film Gen1
BMD 4K Film Gen3 (4K Prod. Camera / URSA 4K)
BMD 4.6K Film Gen3 (URSA 4.6K)
Hybrid Log Gamma HLG BT.2100 (21 IRE middle gray) Rec.2020*
Hybrid Log Gamma HLG BT.2408 (38 IRE middle gray) Rec.2020*
DJI D-Log D-Gamut
GoPro Protune Native*
GoPro Protune Rec.709
FujiFilm F-Log Rec.2020
FujiFilm F-Log 2 Rec.2020
Nikon N-Log Rec.2020
Leica L-Log Rec.2020
Leica SL (Typ 601) L-Log Rec.709
Z CAM Z-Log 2
Cineon
AMPAS ADX10
Rec.709 regular video for Gamma 2.4 displays
P3 D65 video for Gamma 2.6 displays and dark surround
ACEScct AP1*
Canon Log Cinema Gamut (Daylight in-camera white balance)
Canon Log Cinema Gamut (Tungsten in-camera white balance)
Canon Log Rec.2020 (Daylight in-camera white balance)
Canon Log Rec.2020 (Tungsten in-camera white balance)
Canon Log 2 Cinema Gamut (Daylight in-camera white balance)
Canon Log 2 Cinema Gamut (Tungsten in-camera white balance)
Canon Log 2 Rec.2020 (Daylight in-camera white balance)
Canon Log 2 Rec.2020 (Tungsten in-camera white balance)
Canon Log 3 Cinema Gamut (Daylight in-camera white balance)
Canon Log 3 Cinema Gamut (Tungsten in-camera white balance)
Canon Log 3 Rec.2020 (Daylight in-camera white balance)
Canon Log 3 Rec.2020 (Tungsten in-camera white balance)
Canon C500 various legacy profiles
ACEScct AP1 LUTs should be used INSTEAD of ACES Output Transform (ODT) in custom ACES workflows, typically built using a few ACES Transform effects added to a node tree instead of using “ACEScct” Color Science in Project Settings.
DaVinci Intermediate Wide Gamut LUTs should be used with Davinci YRGB Color Managed. Recommended settings are shown in the image below. Input color space should be set to the color space of your source footage. If your project contains media from different cameras/sources, you can overwrite this setting per each media file by right-clicking the corresponding clips and choosing the right color spaces for each file.
Long story short, HLG BT.2408 is a darker version of HLG BT.2100. Use HLG BT.2408 LUT if you shot the footage with "exposure-to-the-right". If you want to know more, here is the best reading about it you can find: Recording & Editing with Hybrid Log Gamma.
"Native" is most likely the actual colors of a GoPro camera. But here is one thing: Every single camera in the world have slightly different colors. So even between the two identical GoPro cameras still will be some mismatch. In professional cameras like Alexa there is an additional color matrix applied inside a RAW file for converting its internal native (and unique) colors into more standard color primaries called ALEXA Wide Gamut. But I have no idea if this is the case for GoPro cameras as well. On more thing to keep in mind is that GoPro haven't published their "Native" color primaries, so the matrix I've used was taking from an unofficial source. And even if this matrix is correct, there is still one factor: each camera colors are different. I shot Macbeth ColorChecker on a GoPro camera and wasn't satisfied by the accuracy of that conversion matrix for "Native" colors. One possible reason is that their "Native" color primaries are the actual native colors, instead of something standardized and just incorrectly called "Native", meaning that it is actually wider than Rec709.
I found their ProTune Rec709 color space giving way more accurate and expected colors, so I would recommend shooting in ProTune Rec709 instead of ProTune Native as much as you can, until you really need the wider gamut for very saturated lights on set.
You can check out the smoothness of the LUT on the images below. A high quality LUT doesn't introduce any rapid changes to color gradients.