Ironically The Orville is a lot close to original Trek, albeit with more infantile humor.
Discovery is pretty much a classic case of style over substance, it's extremely visually impressive, but they don't really know how to write engaging drama without explosions and shallow-evil motivation.
In short, more Fantasy than Sci-Fi and if you can forgive that, it's a decent enough show. But if you're looking for the old light-hearted sci-fi fun with a dash of moral/ethical dilemma, see Orville instead.