Alexander Blade ScriptHook With Recent Natives etc...
http://www.dev-c.com/rdr2/scripthookrdr2/
https://alloc8or.re/rdr3/nativedb/
https://github.com/femga/rdr3_discoveries
https://github.com/Halen84/RDR3-Script-Global-Research
https://github.com/Halen84/RDR3-Native-Flags-And-Enums
https://github.com/Halen84/RDR3-Decompiled-Scripts
https://alexguirre.github.io/rage-parser-dumps/dump.html?game=rdr3&build=1491
You'll need to change the output directory for the asi file to the location your rdr2 root directory is.