The Rolling Giant from Kane Pixels series,

It works as a coilhead, where when you look at it, but after a few seconds  it will move slowly to you.
https://thunderstore.io/c/lethal-company/p/NomnomAB/RollingGiant/

This mod adds a new entity into the game. Demon like creature...

He has 7 abilities.

Break Doors

Hide

Avoid Players Lights (ONLY PRO FLASH LIGHTS AND YOU HAVE TO HOLD THE ITEM)

Seek

Flicker Lights

Invisible

Rage (If you flash at him or take out the Apparatus)

Authors

The demogorgon from stranger things

The creature is simple, if you are in it's line of sight RUN!

If lights start flickering also RUN!

The Demogorgon will pick you up, and your fellow co workers need to knock you off the Demogorgon with a shovel.
The modlink: https://thunderstore.io/c/lethal-company/p/Scoliosis/StrangerThingsMod/

The SCP 096, once you see the Shy Guy, RUN!
YOu have 2 minutes to run exit the facility before it kills you. When it is passive, it will be crying and crouching, and when you spot it, it will start screaming and shouting for 2 minutes. I disabled it leaving the facility, but you can renable it in the config.

Mod Link: https://thunderstore.io/c/lethal-company/p/jaspercreations/Scopophobia/

This mod adds Shrimp from Zeekerss' previous game, The Upturned

Basically you need to feed it scrap, or else it will eat you. When you feed it enough, it will stop following you

A creature similar to ghost girl, scream will haunt you, can send you to a new dimension. It can also possibly jumpscare you! get ready SCREAM!

A moving landmine, pretty self explanatory 

The Bracken will now stay true to his darkness. He will flicker and turn off all nearby lights and will dim player's flashlights if they're close to the Bracken.

The lights turned off by the Bracken will naturally turn back on after a minute or 2.

Trying to forcibly turn back on the lights with the breaker box could cause the Bracken to be angered for a while and causes fear. The power also becomes shut off permanently.

The Bracken will turn off all nearby radar boosters.

The Bracken will turn off the breaker box occasionally.

Taking the apparatus will now immediately anger the Bracken, chasing the player who angered the Bracken.

The Bracken now has a personal space.

She will haunt your walkie-talkie.

She now has the ability to isolate you and to give you hallucinations.

She has new voice lines.

Deghostify, everyone can see the ghost, but it still haunts 1 person.