Counterparty or Omni.

Both of these coins were huge before and then the altcoin hype train just took over essentially. They're still good projects, otherwise Tether wouldn't be using Omni protocol to facilitate and secure their transactions.

All the other projects seem to offer something that people don't need right now. Omni and counterparts are different, and they're not even top 200 coins right now which is a steal in my opinion. A pump is probably going to come soon.