Hi Sarah,
That search instance uses a post type and a category filter. To get a very similar layout you need these options:
– Post type filter: https://i.imgur.com/4uJhgnD.png
– Product Category filter: https://i.imgur.com/FvW5cOy.png
– Product Category filter drop-down layout: https://i.imgur.com/vCvHTtw.png
– And the filters are set to visible by default, and to a “block” display mode: https://i.imgur.com/HnaHdie.png
The theme used on that search instance is Plain Round vertical: https://i.imgur.com/nVfnl0u.png
This configuration should give you a very similar search bar layout.
Related documentation links
I hope this helps!