I got into a bunch of the britpop (or britpop adjacent) bands after I got into Oasis and there's just a lot of great stuff there. The first two Oasis albums are amazing but I must admit that their output after that started declining for me and the first two albums and Masterplan (the b-sides collection) are really all I need from them. I sometimes spin Be Here Now which I think is fine (but a bit bloated and full of cocaine) and I sometimes even get to Standing on the Shoulders of Giants but then I think to myself "Nah I'm good". Oasis had a particular sound and while some bands can keep the same sound and formula and still make amazing albums, for me even the better albums they put out in the 00s suffer from being like the first two albums but just not as good. (IMO at least).
Blur is probably my favorite out of the bunch because they're so damn versatile. The early stuff has a fun youthful vibe to it, but I like how they started evolving their sound as well. Experimenting and doing different things, adding electronic soundscapes into the mix. Radiohead get a lot of praise for the shift from OK Computer to Kid A/Amnesiac, and deservedly so, but Blur kinda did it first. While it could be argued that Blur didn't make an album as good as Morning Glory (Parklife and 13 gets the closest for me) I think what Blur has going for them is that they also never made a bad album, in my opinion. Even their last two albums are albums I would rather revisit than some of the later Oasis ones.
Also really like Suede. Their classic albums hold up and their most recent ones are actually really good in my opinion. The last 3 or 4 albums have all been great. They also fall a bit more on the one dimensional side (like Oasis) where I think you will either like them or you won't, unlike Blur where you might like album X but not album Y.
The Verve gets forgotten and they only made 3 albums (before a 4th reunion one) but all 3 are fantastic in my opinion. Urban Hymns gets the focus because it has Bittersweet Symphony, but it also has other fantastic rockers like The Rolling People and Come On. Their debut is a fantastic Shoegaze/Dream pop infused album and the middle album kinda has elements from both.
Pulp is the one I guess I wish I got into more because they just never clicked with me. I enjoyed some of their classic albums but on a scale of britpop enjoyment I still go back for some of the weaker albums from the other bands more often.