I wish you were on the evaluation team at Stocksy Josh!
Unfortunately I just received the bad news. Didn't get accepted this time.
So sorry to hear that, the images on your portfolio are easily as good as a many they have, imho. The only thing I can think is that they perhaps felt that your subject matter was already being covered by other photographers in this or the previous round of entries. Stocksy is committed to sustainability for it's contributors.
Don't be discouraged, you have a great eye for creating wonderful images which have feeling. One thing's for sure, there's no way I'm in, if the likes of you are getting rejected.
You definitely should apply again next year. Hopefully they gave you some critique which will be of use.