I am going to give you a seriously flawed list. There's your warning, front and center! I think Brian Leiter's list of top general philosophy journals is more plausible as a list of best-regarded general analytic philosophy journals. But for what it's worth, below are the most cited philosophy journals in the non-historical entries of the Stanford Encyclopedia of Philosophy.
* This list reflects the perspective of the SEP editors and writers -- largely an "analytic"/anglophone perspective, among other things.For what it's worth, my own impression is that Phil Review, PPA, and BBS are underranked by this measure relative to their prestige -- presumably due to their low rates of publication -- while Phil Studies, Phil Science, and Synthese, though all excellent journals, are a bit overranked, presumably for complementary reasons. I'm also inclined to think PPR and Nous are a bit underranked relative to current prestige.
* I am excluding historical entries and historical journals.
* I checked all journals that I thought would plausibly be cited at least 100 times, but it's certainly possible that I have missed some. If you think there are journals that should clearly be on this list that are missing, feel free to let me know in the comments. Of course there are quite a few good journals below the 100 citation cut. Philosopher's Imprint especially comes to mind. It has published only 64 articles so far in its lifespan, so it hasn't had much of a chance yet to develop a big log of influential articles.
* The numbers are noisy and approximate for a variety of reasons. Four journals, as indicated below, had titles common enough as bibliographic phrases that I was forced to do statistical sampling.
* To the extent these numbers reflect prestige, they reflect prestige over time rather than current prestige.
* Journals that publish many articles (like Phil Studies, Philosophy of Science, and Synthese) will be relatively advantaged by this measure, while those that publish few articles (like Phil Review and Philosophy and Public Affairs) will be relatively disadvantaged. I tried dividing by the number of articles published in two sample years, but this made the rankings implausible in other ways as measures of prestige; so I leave the raw numbers and note exceptional cases.