There has been mention of an AMD Ryzen 5 3550U with Vega 9 made online, but no other information has been offered apart from the names for the two potential components. AMD already has a Ryzen 5 3550H mobile processor in its lineup that features a Radeon Vega 8 Graphics solution. The Picasso APU family features H-series and U-series chips.
https://www.notebookcheck.net/Mysterious-AMD-Ryzen-5-3550U-APU-with-Vega-9-iGPU-mentioned-online.418755.0.html