They are all quite small and there is a much bigger potential for issues if you don’t enable them.
My guess is that they were already installed by the time you checked with Critical Updates and since CU compares what it saw the last time it was launched with what it sees now, since there wasn’t any “before” to compare it to, all the entries would be in black.
As long as it lists the following versions, you should be OK:
Malware Removal Tool 1.30(1)
Most of the others depend on what version of macOS you are running.
Another way to tell if they installed is to launch System Information… from the Apple menu -key down, and under Software click on Installations. Then click twice on the date column to show the latest and you should see entries for each around the time you enabled them…