Hi all, please disregard. I was just making it too complicated by adding double-quotes where it was not needed.
This worked:
## Other contacts in `= this.contact_lob`
```dataview
TABLE contact_type, contact_info, contact_role, contact_timezone, date_last_spoken
WHERE type = "person"
WHERE contact_lob = this.contact_lob
SORT contact_type ASC, file.name ASC