To download Styles panel you need to go to menu Window – Styles.
A window will appear with a selection of preset settings that you can load, save, define view display and much more. More detail.
So, in the top right menu pane, find the following items:
Text Effects 2
Close Tab Group
To choose the most suitable option of displaying thumbnails, you can select one of the items:Text Only Small Thumbnail Large Thumbnail Small List Large List Preset Manager
In the settings Manager, you can load new styles, save an existing set, rename it and remove.
Next come the points of the variety of preset styles. You have the opportunity to add them to existing, or install over the previous one.