This is a peer to peer help forum. The only presence that HP has on it are the Admins and the Mods. Otherwise, none of us works for HP. With that said, here is a model that meets the majority of your requirements. The memory is only DDR4-2133. I couldn't find any that was DDR4-2400. Here is the page where you can actually customize it to your needs.
If this model isn't what you need, I suggest contacting HP Customer Service for help. They are actually the experts on their computer configurations.
Please click the Thumbs up + button if I have helped you and click Accept as Solution if your problem is solved.