The cryptocurrency coins in the top 100 of market cap rankings as of February 2018 are as follows:
IOTA $IOTA
NANO $RAI (formerly Raiblocks)
Rchain $RHOC (There is some debate over whether or not Rchain is a DAG coin. The Rchain architecture details how payments in namespaces which do not affect one another run on concurrent blockchains. A visualization of the architecture is here: ~~~ embed:958822202677194752) twitter metadata:cmNoYWluX2Nvb3B8fGh0dHBzOi8vdHdpdHRlci5jb20vcmNoYWluX2Nvb3Avc3RhdHVzLzk1ODgyMjIwMjY3NzE5NDc1Mil8 ~~~
Byteball $GBYTE