Unfortunately, DCIR and common discharge tests cannot be used to assessment about cycle life. So you can easily find cell with excellent DCIR, but very poor cycle life. This is the case of Samsung 30Q.
LG MJ1 is using Ni-rich NMC technology, I think it is first gen of NMC 811 cathode from LG. The second generation is LG M36 cell and I think it will very soon replace the MJ1. More precisely, LG will replace soon the whole 18650 and 21700 product line with the new Mxx cells like M26, M29, M36 and M50(21700). First, I was thinking that Mxx product line will be cheaper but with slightly worse cycle life than the old generation. But at the particular example of MJ1 vs M36 from my first results (500 cycles) I can say that there is no significant difference under all of my tests.
Now back to your question
LG MJ1 is definitely the king of the cycle life from the holy trio GA ,35E and MJ1. In fact, MJ1 has one of the best cycle life from almost all 18650 cells I have already tested. M36 seems to be at least as good and at the same time cheaper. Currently LG totally dominates in 18650, because Panasonic did not improve its 18650 product line for about last 5 years.
But different situation is in 21700 line, where LG M50 is also very good, (Samsung have the same problems with cycle life as in the 18650 line) but the new Tesla-Panasonic cells NCR21700A from the first tests seems to have excellent performance in DCIR. For example LG M50 and Samsung 50E are 2C rated cell, but NCR21700A is 3C rated (all are 5000mAh / 18.2Wh cells). I am now awaiting samples of this new Tesla cells and will start the cycle life tests soon. If Panasonic managed to improve the cycle life of NCR21700A as well, it will be nice competition here. The second important question is if Panasonic will use this new chemistry in its 18650 product line or it will from now focuses on the 21700 product line only.