is there multiple DDO for the 1916/16 Buffalo nickel

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This is a little simplified but a good start for you.

# 8 and #7 mean nothing for most practible applications. #8 has nothing to do with the coin and #7 we will leave on the table for now.
# 6 is very rare in the same context as #5 and the two are often confused and generally the same when people refer to them. Strike doubling is most often just a die bouncing or in effect slipping (flopping) of the dies.
A true doubled strike is much more rare than the above esp in modern times.
It's #2, #3 and #4 that we are mostly concerned with here.
All dies were hubbed mulitible times prior to about 1990 and it was during this process as you say, that incorrect hubbing can occure.
There is at least 8 classes of doubling connected to the die/hub making process and one class of "god knows what" type of doubling.

This is not an easy subjest to understand and you are off to a good start.
I wish (oh you don't know how I wish) that others would take time and ask well thought out question and work a bit to understnd this better as they go.

Get a couple of true doubled dies in mint state and study them. Get some reference books such as Cherry Pickers, Fivas/Stanton and The Error Coin Encyclopedia, Margolis, The Authoritive Reference of Lincoln Cents, Wexler

First step is learning to ask good questions and learn how dies were made and are today.

 

At this point, this is the descending scale of non standard coining from what I can gather.

1. Reingraving/Repunched Detail - This is not technically a doubling, but produced many of the early mint products where dies were individually made or reworked.

2. Hub making error - Similar to the above, but mistake made while making the Hub, rather than the Die.

3. Reworked Hub - Again, not doubling per say, but produced some cross mintmark coins as hub dies were retooled for different mints.

4. Double Hubbing - This is what most consider the Doubled Die and is caused by misalignment of the hub used to make the Dies during a multiple press die-making process used before the mid 90's.

5. Mechanical Doubling - Strike Doubling during a single Strike - ie Bounce

6. Double Striking - A planchet which has been struck more than once.

7. Zinc Spread? Doubling

8. Holder Doubling - Not really doubling, but appears to be because of the reflective properties of the holder, especially during photography.

Is this a good synopsis? I know it's not nearly complete.

How's this revision?