Option + Command + Shift + F (Mac) | Alt + Control + Shift + F (Win) will toggle on “Layer Search” (in the Layers panel), and automatically select Filter By Name. This is very convenient if you know the name of the layer that you are looking for.
The Layers panel has additional criteria on which it can filter including Name, Effect, Mode, Attribute, Color, Smart Object and Selected. Choose the criteria and narrow it down using the additional options that appear to the right. The “light switch” to the right of the Filter options toggles the filtering on and off.
Note: when filtering by Kind, you can click on more than one icon at a time in order to narrow down the search.