There are only ~50 programs, there is no 'ranking' of programs. This is no different than every other specialty. Not everyone is looking for the same thing in a residency. Virtually every program in the country will train you to be a good, competent vascular surgeon, some just have perks of going there (like exposure to particular pathology, access to community bread and butter services, research etc), But, so as to not be totally useless, here is a basic framework...
Super Academic vs. Academic vs. Community - Most, if not all programs offer at least some opportunities to get your name on a paper here and there, case reports, case series, etc. But, there are varying levels of faculty interest and institutional support at different programs. Some places have mandatory research years with publication requirements (Pitt, Methodist, Northwestern etc) they have large research branches to support resident/faculty endeavors. Some have more access to basic science than others. Some are more focused on device design, etc. For me, it was all about clinical research and trial design. My retrospective research turned into now 4 on going clinical trials, some investigator driven and one industry sponsored. You simply can't do that at every program. But, again, I'd say that the majority don't want or need it.
Case volume - This is devilishly tricky to suss out, but probably one of the more important things. Every program will get you your numbers, otherwise, they wouldn't be graduating people. But, how much do they fudge (legally) things? And how much extra are you getting? Are you getting 30 CEAs or 100? What about non-tracked cases? Dialysis access is bread and butter in the community, yet some big name programs lack it as a significant part of their practice. Others will graduate you with 500+ access cases. Trauma is another hit or miss at different programs. Which is either a bummer, or a God send, depending on your personal preferences. Amputations are another bread and butter that many vascular surgeons would rather not be doing, but the difference between someone that did a couple in their residency vs. learning to do it well in good volume makes a difference, especially if you are going into the community. Compared to 30 years ago, every program is going to hurt for open aortas, but compared to each other, there are obviously centers that are still doing a fair number, while others have to fudge things to get their residents their ACGME required numbers. Not everyone wants open aortas to be a part of their future practice. Thus, this may be a complete non-issue, or alternatively it could be a big freaking deal.
And then there are the general residency factors, geography being a big one. The number of people looking to go to Springfield, IL is much lower than Chicago, IL. Thus, Northwestern is a heck of a lot more competitive than SIU, despite the fact that they are both solid programs. They just simply offer different things to go along with their different locations. Another major factor is how old the program is. Every new program has growing pains. Don't fall for the, "oh we've been training fellows for years and have GS residents rotating with us all the time, of course we can train IVS residents". It is bull****. Taking a fully trained GS and teaching them vascular or taking on a GS resident for a month is not the same as teaching someone from the ground up (MS4) how to be a doctor. I say this as the first entering class in my residency. I honestly think that we have the best residency in the country. But, it took many years to get there and there were definitely struggles along the way. That isn't to say that newer programs can't be incredibly strong. It just will take a certain type of resident to excel in a constantly shifting and changing environment.
I could go on and on and on about this. Feel free to PM me if you want more specifics, always happy to talk vascular with people 🙂