Create: Sculked

This modpack is a tech-focused pack with an infection mod known as Sculk Horde. This pack has a small number of mods that focus on tech. Some mods such as Alex's mobs add new animals and others add new structures and revamp the other dimensions because they are too bland by default.

some of the main mods with descriptions and links:

Create

Create adds a bunch of logistical gear-based tech to the game in a Minecraft style, it is one of the most popular tech mods out there. some of its features include trains, fluid tanks for storing liquids, and the automation of almost anything in Minecraft.

https://www.curseforge.com/minecraft/mc-mods/create

Create Big Cannons

This mod adds cannons and the means to make them to the game with Create compatibility.

https://www.curseforge.com/minecraft/mc-mods/create-big-cannons

Create Encased

This mod allows you to use all casings in Create on all cogs, pipes, and shafts. It also adds new styles to gearboxes, the mechanical press, and the mixer in Create.

https://www.curseforge.com/minecraft/mc-mods/create-encased

Create Enchantment Industry

This mod allows you to automate enchanting, store experience in fluid tanks, copy enchanted books, super enchant items, and more. One of my personal favourites to use with Create.

https://www.curseforge.com/minecraft/mc-mods/create-enchantment-industry

Create Stuff and Additions

This one adds a lot of fun items to the game and has them executed very well. With additions such as jetpacks and bouncy slime boots, this mod is entertaining.

https://www.curseforge.com/minecraft/mc-mods/create-stuff-additions

Create: Steam 'n' Rails

This mod adds different-sized rails to Create. It also adds some decoration blocks and minecart features.

https://www.curseforge.com/minecraft/mc-mods/create-steam-n-rails

Just Enough Items

This mod adds a search section to your UI when in your inventory, chests, and crafting. It allows you to search for an item, even modded ones, and you can click on the item to show you how it's crafted/made.

https://www.curseforge.com/minecraft/mc-mods/jei

Sculk Horde

Makes the sculk a lot more aggressive. It spreads throughout your world infecting mobs and turning the ground and anything else it can get its hands on into sculk-infected blocks. It has to be activated first, though. You can find the Ancient Sculk Node around the coordinates: 0, 0, 0.

https://www.curseforge.com/minecraft/mc-mods/sculk-horde

BetterF3

This mod gives a new look and animations to the F3 menu.

https://www.curseforge.com/minecraft/mc-mods/betterf3

Sophisticated backpacks

This mod adds backpacks that you can upgrade all the way to netherite to give you insane inventory space. It also has upgrades to allow you to do cool things such as craft in your inventory and smelt too!

https://www.curseforge.com/minecraft/mc-mods/sophisticated-backpacks

Pretty Pipes

Adds some pipes that can transfer items to other inventories. There are also some upgrades and an item and crafting terminal for ease of use.

https://www.curseforge.com/minecraft/mc-mods/pretty-pipes

FTB Ultimine

Adds the ability to mine multiple blocks at once. It also uses up the right amount of durability for the blocks mined. The default keybind is the ~ key. It's in the top left of your keyboard.

https://www.curseforge.com/minecraft/mc-mods/ftb-ultimine-forge

Some of the Performance mods:

Rubidium

Rubidium Extras

Smoothboot(reloaded)

Saturn

Starlight

Fastload Reforged

Entityculling

Canary

Dependencies for some mods:

Dependency  |  Mod(s)

Cloth Config - BetterF3

Sophisticated Core - Sophisticated Backpacks

Architechtury API - FTB Ultimine

Resource Packs:

Lopy's Create Style Sophisticated Backpacks

You can find links to the performance mods and dependencies in the relations tab.