You ask for suggestions from good senior cryptonians to find the remaining 10%.
Although I believe some 20% coins are definitely real and visionary. So here is my short-list for you (DYOR prior to buying)
a. EOS
b. LTC
c. PRG
d. XRP
e. TAU
f. ARK
More than 90 % altcoin are scam. So be very careful. Do you know how to find a good altcoin?