These are bands in the sort of Alternative Rock sphere:
Kerbdog (better than Nirvana)
Therapy? (Wow, still going and better than the likes of Biffy Clyro and Muse! Thier latest album Hard Cold Fire is very good.)
Senseless Things (Sensational band, with links to Muse, The Streets, The Libertines, Lily Allen, Gorillaz. - Way ahead of their time but sadly magazines like NME didn't like them, IDIOTS! Lead guitarist/Vocalist Mark Keds who co-wrote a few of The Libertines hits - a band that are well overrated - sadly passed away a few years back. Do I blame Pete Doherty? No. You need to take responsibility for your own actions. However he has a lot to answer for.
Filter (better than Nine Inch Nails)
The Wildhearts (just a fantastic band, catchy, riffy, rocky, punky, but every 5 years they split up, Shame.)
Stone Temple Pilots (I put them in because many people/journalists are lazy and label them into the grunge category. They only did one Grunge album, their debut Core, the rest of their catalogue is mixed, from psychedelic 70s rock, to garage rock, to folk and pop, to glam rock and metal. Superb band. The best of the 90's grunge era and I include the brilliant Soundgarden in that. (RIP Scott Weiland.)
Urge Overkill (superb band from Chicago, I met and helped them with their gear at the borderline, Tottenham court road 7-8 years ago. Great guys, sadly the venue has now been bulldozed down. Shame.)
Jellyfish (probably the best pop-rock band ever...)
Living Colour (one of the greatest bands of all time that cover various genres from Hard Rock to punk to Hip Hop to Alternative to Grunge to Industrial Metal to Blues to Funk Rock... I could go on.... basically miles better than the RHCP.)
Fishbone (a bit like Living colour, what a band but Red Hot Chili Peppers stole their glory, RHCP are a fairly decent band but well overrated.)
The Elegant Chasers (up and coming Alternative Rock band featuring an Argyle fan.... certainly more rocky than Woody and his band Bastille....)
Cave-In (Wow, a superb act. Quite a heavy band usually but they released the radio friendly album Antenna back in 2003. Miles better than any Foo Fighters album - ironically Grohl invited the band to open for them during this period. Sadly the bassist passed away in 2018 due to a freak car accident. Very sad.)
For some context here are overrated bands:
Foo Fighters - I have all of their albums, and followed them from day one, I'll be listening to the new one in the next few weeks, although if my band released that latest album cover we'd be ridiculed, When you've made it you can get away with anything, (see the red hot chilli peppers canteen album cover, absolutely dreadful.) The point i'm making is I do like the Foo's and i've seen them 4 or 5 times but they are a tad overrated.
Biffy Clyro - kerbdog lovers, they're ok but not brilliant imho.
Royal Blood - ok band but lacking depth and variation.
Muse - fairly good band don't get me wrong but well overrated. Funnily enough they feature an ex senseless things member Morgan Nicholls who is Muse's 4th member, He does a bit of everything live and funnily enough the bands best musician by a mile.