What is the opinion of Reddit about the
HDMI KVM Switch, [email protected] USB Switch 2×1 HDMI2.0 Ports + 3X USB KVM Ports, Share 2 Computers to one Monitor, Support Wireless Keyboard and Mouse, USB Disk, Printer, USB Camera (Included 2 USB Cable)?

HDMI KVM Switch, [email protected] USB Switch 2×1 HDMI2.0 Ports + 3X USB KVM Ports, Share 2 Computers to one Monitor, Support Wireless Keyboard and Mouse, USB Disk, Printer, USB Camera (Included 2 USB Cable) https://www.amazon.com/dp/B08N3XYQY1/ref=cm_sw_r_apan_glt_fabc_T6WB2GZV65GJBB29YCE6

Does searching on amazon “KVM HDMI” not work? Seems like something like this meets all your needs (assuming single monitor)
https://www.amazon.com/NEWCARE-Share-Computers-one-Monitor/dp/B08N3XYQY1/ref=sr_1_6?crid=3KQR49K9094O7&dchild=1&keywords=kvm+switch+hdmi&qid=1620316132&sprefix=kvm%2Caps%2C204&sr=8-6

Multi monitors seems like they may be a pain (particularly 1440p @ 144Hz), so you may have to just deal with 2 buttons.