Since I'm now back, might as well give my own opinion of the most recent batch:
Ayakashi Triangle: It's...fine, really? I don't know why people got any expectations up about the series considering it's Jump romcom, which is a category hardly which proves itself as fine art.
I will say the first six chapters are very competently written, in that there's a general through-line that helps establish a flexible but still steady status quo with a number of supporting characters at the same time. It's like Black Clover in that regard, it doesn't do anything wrong and in fact does plenty right, but it can't really go above an 8 on the measure of quality.
Now, if Yabuki actually has the balls to actually commit to the yuri angle, though...
Magu-chan: God of Destruction: Well, this was...peculiar. Some have been saying that the series is very much a Sunday manga in disguise, and the argument is there, with the SOL focus and generally "sleepy" tone.
Thing is, though, much of Sunday's best works over the last decade (Magi, Silver Spoon, Komi, Yofukashi, Frieren) are manga which through constructed were able to quickly elevate themselves above that tone, and thus far Magu-chan is just...nothing. It's cute, but five chapters in it already feels like the manga has to push itself for ideas, and that's not a good sign in Jump's environment.
Hard Boiled Cop & Dolphin: This series is...better bad.
Here's the thing about Ryuhei Tamura, while he is very much capable of fun character writing and interplay, he is terrible at formation or planning, simply because he never designs characters or settings to align to more than one tone. Hence we have a ridiculous amount of slapstick comedy mixed with a serious mystery story, and the two tones just aren't able to match up. At all. Nothing else really adds up either, and the Anya clone just speaks to me as desperate trend chasing.
Oh, and despite Samejima having a completely separate profession, life position and to a degree personality, it feels like Tamura is still just writing Oga. Ugh.
Me & Roboco: The series is very obviously not intended for anyone above the age of 11, so I can't really say anything one way or another. All I can really question is why Jump wanted to make a series targeted at a such tiny amount of the reader demographic, but that's it.