I would personally do a type set in the following manner.
One from 1950-1954. These were the first proof sets and were in little square boxes with the coins individually packaged. Check this thread to see pics of these sets.
https://goccf.com/t/175515Next I would do a 1963. I choose that year because it is the last Franklin set and an example of the flat pack envelope sets.
Next, a 1964. First (and only 90% silver) Kennedy, last silver quarters and dimes until 92.
Then 1965. This is the first year of the three Special Mint Sets (SMS). It was in the flat pack.
66 or 67. SMS as well, but very different packaging.
1970. This is the last 40% silver Kennedy and an example of the new packaging started in 1968.
1973. This is the first year Ikes were in the regular proof set. It is also the year they changed to black packaging and the display holder.
1979. First
SBA.
1980. Packaging change.
1983. For this one year they went back to the packaging from 68. No clue why they did that.
1984. First year of the purple sets.
1994. First year of the green sets.
1999. First year of the
State Quarters program.
2000. First year of the
Sacagawea dollar.
2007. First year of the
Presidential dollars.
2010. First year of the America The Beautiful (
ATB) quarters.
That covers the regular proof sets fairly well I think. I did NOT go into large date/small date, type 1 and 2 things like that. And I skipped 76 because you said not that one, though I certainly would.
Then any year Prestige proof set, Premier proof set and the Limited Edition set. I would also suggest getting the three coin 40% silver proof 76 set. You can also look into getting one brown box 40%
Ike dollar and the 99 proof
SBA. Both of these were individual issue proof coins not in the sets.
That would be a pretty good type set of proofs I think.