F_Kal Yeah, these apps implement their own search features because, as far as I know, the native macOS find function can only search for text. It’s that cool feature that Apple has totally forgot about. So, it’s not surprising that the majority of macOS users doesn’t know it.
Any native apps that only search for text is likely to use the native macOS function. Safari, Notes, Mail, and TextEdit are the ones that comes to my mind at the moment. Safari actually stylizes its search bar, funnily enough. So, the Orion team can actually stylize their search bar to akin to Safari if they want.