The following Marantz models support 8K@60/50 Hz or 4K @120Hz with pass-through and upscaling.
SR8015
SR7015
SR6015
SR5015
NR1711
AV8805A*
*The AV8805 requires an 8K board upgrade kit to support these features.
However, you should cross-check the technical specifications of the model you are considering to ensure it supports the standards that you require.