I think the OP's question is hopelessly muddled between "what are the top 10 collected series in general
" and "what are the top 10 collected series for you
As such, some answers apply to the former, and some to the latter; I'll try to answer both - but first, the former.
(Note: I didn't realize that the OP technically doesn't specify coins
either until I have almost finished this post; as such, I didn't include anything on non-coin collecting. Not that I know much about it anyway.)
Limiting this to coin collectors in the USA, as the OP list seemed to imply, and excluding very short series (6 coins or less), we get (at my best guess) the following result:
1. 50 State Quarters
2. ATB Quarters
there's a very big gap in there, as we go from "someone who likes pretty coins" to "actually a collector"; some of the excluded short series would have been in this gap
3. wheat cents
4. Buffalo nickels
5. Indian Head cents
6. Mercury dimes
7. memorial cents
8. Jefferson nickels
9. Roosevelt dimes
10. V nickels Franklin halves
, Walker halves, Morgan dollars
, shield cents, or Native American dollars
more than 6 of those, right?) might actually be somewhere in the top 10 (especially the Morgans, which are commonly collected but pricey); a rudimentary version of OFEC/One From Each Country and/or of a type set might be up there as well - hard to say.
I don't think Peace dollars
, Barber dimes
, Ike dollars
, Presidential dollars
, or Washington quarters
make it into the top 10, though they might be close (especially the Ikes).
Expanding things to worldwide coin collectors (but leaving the 6-coin exclusion limit in), I estimate the following result (modulo my ignorance of the state of collecting in China, Brazil, and, to a lesser extent, India):
1. State Quarters
2. euro coins by country/type
3. probably still ATB Quarters
4. 2 euro commemoratives
5. OFEC/One From Each Country (in ways not covered by 2)
6. probably Indian commemoratives? the sheer population of India should get them up there
Past that I'm not particularly confident.
China and Indonesia do not issue large series of circulating commemoratives (that I know of), so I'm not sure what people from there collect, if anything.
India does, but it might go too far in the other
direction (too many types to bother collecting). I don't recall offhand whether Brazil does.
Nigerians and Bangladeshis (and probably also Indonesians) are, for the most part, too poor to collect coins (so are Indians, but there are very many of them, so it might balance out).
Modulo China, I suspect that the next series in line is something European, but I'm not sure what exactly.
Finally, here's my (approximate) personal list - though some of those are on hiatus as I've long ago ran out of easily-affordable gaps...
1. Russian 1 kopek type set [hiatus]
2. One From Each Country
3. One From Each Century [complete/hiatus]
4. US type set (7070 album)
5. One From Each Year
6. Romanian type set (circulating, non-gold)
7. lowball 1860-1894 UK pennies
8. general Russian type set (not limited to 1 kopek coins)
9. Mongolian type set (non-commemorative)
10. um... probably Israeli type set?
As far as I'm concerned, as of this Tuesday
(i.e. now that I have a definite 13th century AD coin), I have officially completed the One From Each Century series (5th century BC to 21st century AD), pending attribution of my 8th century AD dirham (which I should probably post some day).
However, I'm still, in principle, looking for 6th century BC coins - I just expect them to be mostly beyond my budget. (7th century BC coins exist as well, but cost hundreds of dollars or more.)
One From Each Country was much more active 2-3 years ago, but screeched to a relative halt when the Numista system was reorganized and the 300 country club was no longer achievable. (I got to 293 - so close and yet so far.)
Now that it might soon be at least theoretically possible to have over 300 countries on Numista again, I guess I might reactivate the quest.
I'm not actually sure of the numbers 9 and 10, which are fairly minor as my collecting goes; it's possible that there's something I'm missing but didn't think of offhand.
The ordering among 6-8 might be different as well, though I'm more confident of them being 6-8 in some order (again, assuming I didn't miss anything major).