The numbers beside each members name indicates how many slots have sold out out of the maximum amount of slots.
For example 10/35 = 10 (the amount of slots sold out) / 35 (the total amount of slots)
A number inside brackets indicates that a slot has almost sold out. A number inside a circle shows which round the member sold out at.
For example, Yamamoto Sayaka (Sayanee) at the first round is shown as "Sayanee 34/35 (1)" meaning that at round 1 she had 34 slots sold out and 1 almost sold out. By the second round Sayanee is shown as "Sayanee 35/35 ②" meaning that she sold out all her slots during the second round.
It was 755 where Aki-P talked about how he's going to make an orera song. Whether it includes Maachun we'll see.
Senbatsu is really tough to predict this time. There have been a few days where senbatsu members have gotten up early, but it's been hard to gather exactly what's going on. That list is nothing but conjecture based on a day when a lot of upper-middle senbatsu members went to Tokyo while Milky was off getting acupuncture somewhere to go along with Sayaka's vocal surgery recovery. Only Coco-chan was actually there as far as I saw between her, Isochan, and Azusa, though it's fair to assume Azusa will be included in some capacity given her push lately.
But a ton of members are getting handshake slots slashed; many won't even have full slots for this single. Lemon, Jo, and Konomin in particular don't have a full slot at Nagoya.