I prefer hornady over starline in spades.
So far, all I have used is large primer, accuracy is fantastic.
H 4350 seems to be the popular powder, but in Tx, you can get away with IMR 4350 if you have any on hand, AA4350 seems to be more accurate than either of the other 4350's in two rifles of mine.
If you can find any, R#26 with a Fed 215 primer will put you in 6.5/284 ballistics(2900+) area with a 143 eldx depending on how long your barrel is, and will not open up your primer pockets.
Here is an issue you will have to deal with. While a fabulous design, the 6.5 creed with a VLD bullet is at or beyond mag length with some bullets when the gun is brand new with the bullet seated to touch the lands. For this reason, you may find your rifle more accurate for mag use, with a NON vld bullet just because you can seat the bullet to be at or very near the lands. If you find yourself in this situation, then a few bullets will serve you very well when it comes to accuracy, 120g Sierra, 140g Sierra BTSP, 129g Hornady SP, 140g Hornady BTSP.
The 140g Sierra btsp seems to be very easy to get to shoot with AA4350, play with primers as it is night and day difference in this case. Also, the 127g barnes tipped tripple shock was easy to tune in a load for in 5 different rifles chambered for 6.5 Creed, 6.5x47, and 6.5/06 jumping the bullet .050.
If it were not for R#26 liking mag LR primers, I would go small rifle primers all the way, but R#26 with 215's is another ball game, speed and accuracy without blowing the pockets.
Over all, the two creeds that I have seem to shine with 129-130g bullets. The 123g Sierra is unbelievably accurate, also for targets. The 129g NOsler long range accubond is very, very accurate, and likes to be seated up against the lands. For your short range hogs, the 129g Hornady interloc flat base is a whale of a good killing bullet. AA4350 works on all of the bullets mentioned above.
If you want to go whole hog:
https://www.petersoncartridge.com/match-grade-brass/brass-rifle-casings/
or lapua,
especially if your barrel likes top end pressures which most do. I shoot Hornady almost exclusively in the 6.5 creed at the 2750 fps node with 143's and ~~~2900 with the 129-130g bullets. Where you need the Lapua or Peterson brass is for the next highest velocity node.