New certificate found (at least new to me), which I believe dates to 1888 and led me to realize another certificate variant that I previously thought was an 1889 issue is likewise an 1888 example. Here is the new Goodwin certificate.
Here are the pair of 1888 certificates followed by the three known 1889 variants.
And here is a summary of all five certificates with cabinet and album information that can be found on each.
The table above suggests the World's Champions album (based on N162 cards) could be obtained in both 1888 and 1889 (fewer certificates required in 1889).
I do believe there are still more variants to be discovered. I'd love to see an 1888 example with cabinet redemption details.