Start Menu Previous Layout - Enable

config/tweaks.json

80 "WPFTweaksRevertStartMenu": {
81    "Content": "Start Menu Previous Layout - Enable",
82    "Description": "Bring back the old Start Menu layout from before the gradual rollout of the new one in 25H2. On newer versions of Windows !!THIS TWEAK WILL NOT WORK!!",
83    "category": "Essential Tweaks",
84    "panel": "1",
85    "registry": [
86      {
87        "Path": "HKLM:\\SYSTEM\\ControlSet001\\Control\\FeatureManagement\\Overrides\\8\\3036241548",
88        "Name": "EnabledState",
89        "Value": "1",
90        "Type": "DWord",
91        "OriginalValue": "<RemoveEntry>"
92      }
93    ],

Registry Changes

Applications and System Components store and retrieve configuration data to modify Windows settings, so we can use the registry to change many settings in one place.

You can find information about the registry on Wikipedia and Microsoft’s Website.