Take a look at this article:
ESP32 Camera Dev Boards Review and Comparison (Best ESP32-CAM)
The Maker Advisor website complements Rui & Sara’s tutorials by gathering lots of tips and reviews on the material they use. It also shows you where you can buy the material online.
As Stéphane said, you can go to Maker Advisor website and see our recommendations for parts.
We have a dedicated section for the parts we use: Maker Advisor Tools
Additionally, there are links in the ESP32-CAM eBook for the parts needed to build the projects. In the Appendix there is a list with the parts required and links.