For what it is worth, and a little shameless self-publicising of the 3D Printing SE site, we maintain a list of common moderating/review comments, for everyone to use. Some have been taken from other SE sites, where I had seen them being used frequently, and some are the auto-review comments from other SE sites.
Each comment is displayed as it would be seen (in blockquote format), but to use them it is best to copy the code formatted
examples, under the "Copy and Paste" logo: C&P ⎘. This is becuasebecause they contain the shorthand links, which don't travel well when copied from the blockformattedblockquote formatted examples.
Feel free to take a look and use or copy them.
You can find them here, Do we have Standardised Comments?.