Reboot seems to have fixed it and made it visible. Leaving this post up so others have all the commands in one place.
[14:15 cloud ~]# ethtool -i eth5
driver: i40e
version: 2.26.8
firmware-version: 9.50 0x8000f255 23.0.8
expansion-rom-version:
bus-info: 0000:5e:00.1
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: yes