Are the Selling Sunset cast actual real estate agents?

Source: https://www.banburyguardian.co.uk/read-this/selling-sunset-season-6-is-the-oppenheim-group-real-and-are-the-cast-real-estate-agents-4144478

Making matters worse, Stause later discovered the whole "Selling Sunset" cast had been invited to the ceremony regardless.

Source: https://www.popsugar.com/celebrity/chrishell-stause-g-flip-relationship-timeline-49178296

Now, as if Emma wasn’t already busy enough being a staple figure on Selling Sunset, she’s also the CEO of her own plant-based frozen food brand, Emma Leigh & Co, known for its vegan empanadas.

Source: https://www.monstersandcritics.com/celebrity/selling-sunsets-emma-hernan-is-mixing-a-little-business-with-pleasure-at-cabo-office/

Selling Sunset follows a group of Los Angeles-based real estate agentsThe Oppenheim Group.

Source: https://www.bedfordtoday.co.uk/read-this/selling-sunset-season-7-potential-release-date-cast-plot-4148607

The Selling Sunset star, 41, flashed a cheerful smile as she stepped onto the red carpet at The London Hotel shortly before the screening.

Source: https://www.dailymail.co.uk/tvshowbiz/article-11765755/Chrishell-Stause-busty-bombshell-leads-stars-LA-premiere-latest-film.html?ns_mchannel=rss&ns_campaign=1490&ito=1490