If you need more HDMI 2.0 ports and extract audio from source devices to your audio receiver simultaneously, the best solution is HDMI 2.0 switch with audio output, which can simply be considered as the combination of HDMI 2.0 audio extractor and HDMI 2.0 switcher.
HDMI 2.0 Switcher
If you need more HDMI port on your TV, or diplay the same content on multiple TVs / monitors simultaneously, an HDMI switcher or HDMI splitter is enough. However, if you need to use multiple HDMI source devices and multiple high-definition display terminals at the same time, and want to be able to arbitrarily control the transmission of one or more HDMI signals to one or more display devices, the solution is HDMI matrix switch.
As we have known, in order to get more HDMI ports on your TV, an HDMI switch is required. Currently, most 4K TVs resolution has been up to 4K@60Hz (60fps), even 4K@120Hz, as well as multi HDMI devices like PS4 Pro, Xbox One S, Blu-ray player, Apple TV 4 and more, have been equipped with HDMI 2.0 port and support 4K 60Hz HDR HDCP 2.2.