As the other posters have said, that's far too many fish for a tank of that size, plus a lot of them are going to grow too big, or will fight or eat each other
First of all, is this tank 'cycled'; that means has the filter developed the right sort of bacteria to eat the fish's wastes and stop them poisoning themselves? If it's a new tank, then you're in big trouble; all those fish will produce a
lot of ammonia, so you'll need to do be doing very large water changes, at least once a day, preferably twice, making sure the new water is temperature matched and dechlorinated.
Now, let's go through your stocking....
the guppies and glowlights would be fine, if your tank was cycled
the rainbow and red tailed black sharks. You can keep only one of those per tank, as they're very territorial and will fight each other once they're mature. They also really ought to be kept in a four foot tank, minimum.
the two bristlenoses would be just about ok, again if your tank was cycled, although I wouldn't want keep more than one in a 100l tank.
the two oscars...this is where your big problems start. Oscars grow to over a foot long, and a very heavily built, messy fish. You would need a tank of [i[]at least[/i] 75 gallons/340l for those. They're going to eat all your smaller fish as soon as they can get them in their mouths (and they might well try even before then) as well.
the two striped catfish..well, I'd need to know exactly what species these are before I can really give good advise, as there are an awful lot of catfish with stripes on. If you can get pics, we can identify them for you.
If they're corydoras, worry, because the oscars will eat those and cories have spikes on the their gills and fins that they can extend and stick into any fish that tries to eat them, which would kill both fish; there's no way of getting them out once the big fish has got them stuck in their throats
If they're striped raphael/talking catfish, they're going to get too big for your tank too.
The severums would also need a much, much bigger tank, and will most likely get badly bullied by the oscars, as they're quite shy, for a cichlid.
I'm sorry none of us are sounding very encouraging, but there is a lot more to keeping fish than just buying what you like the look of and sticking them in some water, I'm afraid.
Get some water changes done, read up on cycling and try and get as many fish as possible; certainly the oscars, svererums and all but one of the sharks, back to the shop.