I made specific reference to the above checklist in my original version of 'understanding bird orders and families'
and, although that document has now been updated, I’ve retained a copy of the list for reference purposes as it’s in the same format as the “Cornell eBird/Clements Checklist
v2015 (Dec.15)” that was current at the time.
This is my simplified version, which shows all 36 orders and all of the 104 non-passerine families. I did not look at the families within the order PASSERIFORMES.
A direct link to the current Birdlife taxonomic checklist can be found here