To get a list of all installed Arch/AUR packages that aren't libraries or dependencies, i.e., they aren't required by any other packages, you can use the `pacman` command with the `-Qent` flag. This will list all explicitly installed native packages that are not direct or optional dependencies:

```bash
pacman -Qent
```

However, this command will only list packages from the official repositories and not the AUR packages. To get a list of all installed AUR packages, you can use the `pacman -Qmq` command:

```bash
pacman -Qmq
```

To filter out AUR packages that are not required by any other packages, you can combine the output of the above commands with some additional scripting. Here's an example of how you can achieve this:

```bash
comm -23 <(pacman -Qmq | sort) <(pacman -Qqg base | sort -u)
```

This command will list all installed AUR packages that are not required by any other packages. Note that this command assumes that you have the `comm` utility installed on your system. If you don't have it, you can install it by installing the `coreutils` package:

```bash
sudo pacman -S coreutils
```

Keep in mind that this approach might not be perfect, as it may still include some packages that are indirectly required by other packages. However, it should give you a good starting point for identifying packages that are not libraries or dependencies.