Hi Claudia.

About icons - SP Page Buiulder 5.x are using icons from Font Awesome Free v5.15.1

That link should help you preview all icons: https://fontawesome.com/v5/search?o=r&m=free

serverals icons may not be available in SPPB, becuase on FA website it's 5.15.4 library.

Sometimes in projects (themes) we use our own icons (images) or free icons.

About photos, we always recommend to use your own photos (!): delivered by your customer, made by photographer or from stock or AI generated. The reasons for this are obvious.