A phone that may have been the Vivo Nex 2 - as this phone has been alleged to come with 10GB in RAM and the Snapdragon (SD) 845 appeared on Geekbench recently. However, another device from the same company with a completely different model number has surfaced on this same benchmark site. Oddly, this 'new Vivo' also has the SD 845 and 10GB RAM.
https://www.notebookcheck.net/New-Not-the-Dual-Display-Nex-Vivo-phone-with-10GB-RAM-spotted-on-Geekbench.376551.0.html