I will not give numbers but comparisons:
Razor: Hisoka was just slightly interested but in the end he beat him at his own game (dodgeball) so that is enough for him. In a proper fight Hisoka will most likely destroy him.
Biscuit: better than Razor but not very much. Even if Hisoka didn't see her true form he didn't have the slightest sign of interest towards her, never (not even during the dodgeball but to say the truth she didn't do anything exceptional before being eliminated). The point is that Biscuit is probably retired as a fighter or has passed her prime and doesn't apply really anymore / has reach her potential. She says more than a time through the manga how much potential Killua and Gom have, I remember a line were she says she learnt to do something like the lightings Killua do only in her 20ies aka she has much less potential aka Hisoka is interested only in guys with unimaginable potential (Gon and Killua) or guys that (also) have already realized (a portion or fully doesn't matter) this potential (Gin, Netero, Illumi) aka guys who can give him a memorable fight and Biscuit doesn't fall in this category.
Kite: Probably better than Biscuit. Entertained to a degree but not really. Kite put up a good fight vs Pitou (he lost an arm from the start and Pitou ended up with a lot of bruises) but not to the point to be really interested by Kite. Illumi said that Hisoka missing the Chinera ant arc missed the chance to fight the chairman or the royal guards aka that was his league so I guess that him vs Kite could be something like Pitou vs Kite.
Then.. Too many names, I can't wrote a paragraph for each lol.
Anyway: Zeno and Silva, he would be interested, they are close to his level. See Chrollo vs Zeno and Silva.
Netero could have been 100 or even more, but the same can be said for the Zoldycks afterall if Illumi already get a 95.
Morel is a support type, indirect fighting. Hisoka wouldn't be interested nor Morel would want to fight him. Low score.
Knucle. Low score too. Too inexperienced for Hisoka, too good hearted, maybe about Razor level? Less than Biscuit.
Lesser melee spiders. Good scores but nothing serious. He wants only Chrollo from the spiders. Most likely every one of them has some kind of weakness Hisoka already clearly see. Maybe 85-90 compared to Hisoka if Illumi is a 95.
Chrollo, 100 or more.
Ging, at least 105.
