Hmmm, we dont have any SS's I dont think....
Toddler Bedbug we had to boost to oblivion.
I do rate the Wild Child NN+, which fits dawn on second tightest snaps
We also use a hemp Ella's House XL with a bit of MF and/or Bamboo at night times just fine. I have one of the thinner Ella's house (the one without the fleece lining?) and we use that with an extra Ella's house hemp foldy over booster and a MF cleaning cloth tri-folded with a fleece liner.
They're not pretty, and you'll need big woolies/fleece/wrap to cover them, but we also use Bumpers sometimes. They're just white fluffy cotton. Can't remember right now who makes them. But I have one you can borrow if you want? Ive got 3 which are new (prewashed only) as we only use them at night in emergencies (aka when we're out of pretty NNs
) They fasten with a nippa, though I've put snaps on one of mine
ETA: How about Minki Yo-Yo? They do a trim and a not-trim version. The not-trim one might be boostable for nights...