Wonder what the reason is. Someone like Vigorous Steve would know. He constantly tries different peptides, uses GH, and even said some private individual there sold him a big stash of Increlex which few have been able to try, which he says is magic. He seems to be able to get any steroid, any time. It must be due to the China fentanyl busts.
Out of what you mentioned, I would have stocked up on pharma grade Test Undec. Would be perfect for a needle free down period where you have TRT levels for about 8 weeks or more. Or if you went on an extended vacation, or even a short jailhouse term, 3-4 grams of Test Undec and you are swole for several months.
Old stock would be preferable, even expired ones. Bigger chance of being legit. I'm taking Parabolan which expired 8 years ago and if works as it should.