(Not) My kind of HDR
I like your compositions, your subjects and your enthusiasm. They are good shots. But the "HDR" treatment (like so very many shots these days) doesn't appeal to me whatsoever. They feel like they are glowing neon. I particularly can't stand overcooked HDR skies that look like bad black velvet paintings as has been noted. Yours are better than many but it still doesn't float my boat.
I actually think a lot of this isn't simply much a matter one's taste, but the fact that HDR modes are in such rampant overuse that it just screams "I clicked a button and used a certain filter or feature" and hoozah, here it is. No question, it's a fad. But I'm even seeing its overuse in journalism including mags like National Geographic. And I cringe. I hope we all don't get used to it as being acceptable particularly in such contexts.
I feel free to rant here because you've got good initial photos, and I can also compliment you on them whilst hating on the HDR technology.
I think if you looked at ways to still do punchy or even playful colour treatments and contrast, along with some careful dodging to get the brightness out of shadows, they could really be interesting and appealing. Seems all the info is there in the file and the essence is there in your exposure and composition and subjects.