SUPER DEBLOATED WINDOWS 7
=========================

(You can't get this good on Win10 BTW, it's too bloated to begin with.)

My main tool was NTLite. Look that up. It's amazing how much you can debloat with just that one tool. I started with an ISO that was already somewhat of a lite version and then took it farther, but you can start with an official ISO. There were some things that required me to unpack the "wim" file with DISM and inject some things into the registry, but for those less knowledgeable, a lot can still be done with only NTLite.
I only have 7-8 svchost.exe processes. I had to do several builds before I got it 100% functional. After using this version for like 4 years, I can say it does everything windows 10-11 can do except the newest DirectX. I also slip-streamed updates and the uxtheme patch and included a better Aero theme than the original. I also use Win 7 folder background changer so I don't have the ugly bright white backgrounds on my folders (doesn't work in "computer" or "docs", but I just made a direct shortcut to those locations and it works). I prefer a more dark theme.
Lastly, I always install a RAMDisk (q-soft) with a minimum of 2GB and change my "TEMP" environment variables to point to it. And I create my Firefox/Waterfox (or other browser) profile on the RAMDisk cause browsers make a ton of IO to the cache. Then I made a batch file that uses 7-zip to compress my profile to the actual drive, and in the startup folder, another batch which finds the profile archive with the highest number (newest) and extracts that back to the RAM disk. I use about:config in the browser and set cache fully to RAM and increase the size to 2GB or more. (without RAMDisk, firefox doing nothing just with tabs open, writes several GBs every half hour.)
With this, I can watch my SSD light on my PC and it only flashes like once every minute even if I'm watching videos on youtube. It's perfect cause your SSD will last forever.

These Windows services are started:
-----------------------------------
Application Experience
Application Management
COM+ Event System
Computer Browser
Cryptographic Services
DCOM Server Process Launcher
Desktop Window Manager Session Manager
DHCP Client
Distributed Link Tracking Client
DNS Client
* Encrypting File System (EFS) - probably can disable if not using drive encryption
Group Policy Client
Human Interface Device Access
Multimedia Class Scheduler
Network Connections
Network List Service
Network Location Awareness
Network Store Interface Service
Plug and Play
Power
Remote Procedure Call (RPC)
RPC Endpoint Mapper
Security Accounts Manager
Server
Shell Hardware Detection
System Event Notification Service
Task Scheduler
Themes
User Profile Service
Windows Audio
Windows Audio Endpoint Builder
Windows Driver Foundation - User-mode Driver Framework
Windows Event Log
Windows Font Cache Service
Windows Management Instrumentation
Workstation

* If you need network share folders, you may have to enable BITS and TCP/IP NetBIOS Helper.

Here is the task manager:
-------------------------
Name ProcessId
System Idle Process 0
System 4
smss.exe 268
csrss.exe 408
wininit.exe 504
csrss.exe 512
winlogon.exe 580
services.exe 592
lsass.exe 624
lsm.exe 632
svchost.exe 728
svchost.exe 804
svchost.exe 908
svchost.exe 948
svchost.exe 976
svchost.exe 1012
svchost.exe 888
taskhost.exe 1288
dwm.exe 1376
explorer.exe 1408

So technically, there's only 18 processes. I just generally have some tray apps open, notepad, hotkey stuff, and sometimes WmiPrvSE starts up on its own.
One last thing. After booting up, you have to right click computer and goto properties to activate the license. If you don't after about an hour, it will say windows is unlicensed on the desktop. You only need to do it once.