Ah, that’s too boring. I have a range of responses to pick from to keep things interesting:

• LGTM
• Nice
• Looks good
• Thanks
• Looks great
• :thumbsup:
• Looks good to me
• :shipit:

For me, no text means “I haven’t really reviewed this properly so don’t want to write anything that could be used against me if (when?) this breaks something in prod”