A group of Microsoft Products and technologies used for sharing and managing content, knowledge, and applications.
The truth is there is no out of the box org chart option. The suggestion to use Spaces can't be serious - Spaces is just another one of those things Msft has added because "they can" - there's no demand for it or need for it, and it's a horrible way to display an org chart. Most users would prefer them to spend their time developing something useful - like a usable org chart - instead of wasting time on poorly implemented, eye candy that looks like something from the 90's.
I would look into the 3rd party developed modern PnP search option, which includes a people layout Handlebars template, can be easily customized and is open source.
https://microsoft-search.github.io/pnp-modern-search/
There are also some other SPFx options worth exploring, but I haven't yet found one that fits the bill.
By the way, Msft has already built a serviceable org chart which can be seen on Delve pages and in Teams. For some unknown reason, they've never made it available to add to SP pages. This is the type of thing they should be spending time on instead of useless things that no one wants, like Spaces.