I cruised nexusmods for non-costume mods so you don't have to

Here's a list of every mod that isn't a costume/character mod on nexus. Feel free to add more from other sources or if I missed one

Necessary to begin
Fluffy mod manager	A mod manager that makes it possible to install mods by modifying PAK archives

Mods I use
RE Framework	Modding tool/framework with a powerful scripting API using Lua Comes with ReShade crash fix, FreeCam, Timescale, FOV, Ultrawide, VR, and tools for script/mod developers
Hitbox Viewer 1.0 (github)	Initial hitbox viewer release. Views hitboxes, hurtboxes, pushboxes, throwboxes, throw hurtboxes, and proximity block boxes. Also includes the ability to toggle on and off viewing of each box type.
Playstation dualsense PS buttons	Swaps out the Xbox One controller prompts and replaces them with PS button prompts. Available in DualSense White or in Classic PS Colours!
Faster Startup	Skip intro logos mod! You no longer have to click past 10 screens and watch animations every time. Not perfect but pretty good.

Sound from other FGs
UMVC3 level sound mix	Level gauge sound to UMvC3 specifications
Persona 5 battle end BGM	Change battle end bgm to Persona5 (https://youtu.be/qMrqZuI-PuQ)
Tekken 4 Announcer	This mod replaces the announcer in Street Fighter 6 with the one from Tekken 4.
Battle end BGM SFA3 Way to the Glory	Change BattleEnd BGM to Street Fighter Alpha 3 OST Way to the Glory (Winning VS Theme) (https://www.youtube.com/watch?v=E8ZYy3FfHDY)
SFIII 3rd Strike Round Announcer	Uses the third strike round announcer (Round1/2/3, fight, KO, perfect KO)
CvS 2 Announcer	The announcement sound during the match will be changed to that of "CAPCOM VS SNK 2".
SFIII Music loop for character select	Street Fighter 3 music loop to replace character select bgm. You ca listen to it here: https://www.youtube.com/watch?v=a0vH9Dr30bY
SF4 fighting ground BGM and result BGM	Replaced 3 of 4 Fighting Ground BGM with SF4 Character Select BGM / THE NEXT DOOR -INDESTRUCTIBLE- BGM / SSF4 Main Menu BGM(prelude). And replaced SF6 Result BGM with SF4 Result BGM on Result Screen.

Other sounds
Rap music remover	This mod removes rap music from the game while keeping all the OST intact
Drive impact volume increase 10db	Drive Impact volume increase 10db
La La Dog for Manon's Critical Art	This mod replaces the la's from Manon's critical art with the la's from the international YouTube superstar, La La Dog.
Kimberly Fart sound effect	Adds a toot sound effect during Kimberly's Teleports.
Ken stopped waiting for me	You are looking for music, or a combo tutorial and Ken won't shut up asking you what you are waiting for ? Well this removes this line, but keeps the rest of his dope sounds.
No avatar voices	Tired of hearing them voices all the time?
Replace drive impact hit with taco bell	This mod replaces the sound effects that play whenever the player hits the opponent with a drive impact with the Taco Bell sound effect from all the memes. There are two versions: One that applies the Taco Bell ring to all Drive Impact hits and one that only applies it to the punish counter version.
Fart sound effect for burnout	A fart sound plays when a player goes into burnout.
Instrumental Character Select Screen	Character select screen music plays without vocals.

VFX, fireball, color
Guile VFX color pack	Changes the color of Guile's visual effects.
Marisa	"
Luke	"
DeeJay	"
Lily	"
Dhalsim	"
Juri	"
Ken	"
Ryu	"
Cammy	"

Aleks Le is amazing
Divorced Sand Blast	Replaces Luke's sand blast line with "Divorced!"
Boom Divorced	Adds the "BOOM DIVORCED" audio from Aleks Le's SF6 memes video to Luke's victory voiceline ("LUKE WINS")

Other
Costume X Versus Mod	With new mod costume slots, new stages and model swapping, launch quick and easy local versus/CPU battles, including team battle and gimmicks with randomizer
Battle Hub Stage	makes the battle hub stage playable in stage selection
SF6 capcom logo	logo
No Character Backlights	Removes the obnoxiously bright rim lights behind every character (fixing "gleam" on some models)
Realistic Stage Lighting	Enhances the lighting on some stages to be much more clear and realistic, highlighting details like skin, fabric, sweat and muscle definition
Giant fighters	Embiggen the size of your favorite Street Fighters!
Quick Start Game - Absolute Zero logo	This mod will skip EVERY SINGLE LOGO present during game startup, COMPLETELY ELIMINATING ANY LOGOS, with the sole exception of the one prompting you to press a button. I deleted the RE Engine audio logo as well, so you don't have to hear this anymore.

Ok, I lied. here's 2 costume mods
Nergigante Monster Hunter (Blanka)
All Might Boku No Hero (Marisa)