Ungulates. Because who doesn’t like a hoofed animal?
My client machines are even-toed ungulates (order Artiodactyla) and my servers/IoT machines are odd-toed (order Perissodactyla). I’m typing this on Gazelle. My router is called Quagga, both after the extinct zebra subspecies and the routing protocol software (I don’t use it any more but hey, it’s a router).
Biological taxonomy is a great source of a huge number of systematic (and colloquial) names.