I have been trying to decide on this as well. Think it may make some difference which 6.5 cartridge you plan to fire the bullets from. I have been looking hard at the 130gr terminal ascent to use in both 6.5 PRC and Creedmoor. Seems to be a good compromise between a cup and core bullet and a mono metal.
Out of what you have listed, 143 eldx. I have been shooting the 130 TMK lately and it has showed good results on whitetails. I have not shot an elk with it yet but I think there is enough evidence on this sight already to prove it works.
Seeing that the 223 thread is such a success, I thought maybe I would start one for the Creedmoor/260. Seems like people are asking a lot about using them and various bullets, especially for elk. I've used mine for the last few years almost exclusively. I have some pics of bullet damage, albeit...
I have had a lot of luck with the Nosler 130 Accubond, but I know there are a lot of other good options as well. I do like that the Accubond is fairly fragile at the front, fragmentIng and leaving very large wound channels. I do trust it a lot. Last elk took 3 steps and nose planted.