Conjunto Corona - been a fan of them since 2017, when I first saw them live at a microfestival; since then, and thanks to their last album, they've been getting a lot more recognition. Went to two concerts, one had a small amount of tickets available and the other one didn't, both had like 100 people. "kitsch lo-fi hip-hop"
David Bruno - part of Conjunto Corona, has a solo career as a producer and lately as a singer as well. "kitsch pop"
Glockenwise - been listening to them since early 2019, after they released "Plástico", their first album in portuguese. Still underrated in Portugal, I bought tickets for their last concert in january (it got cancelled afterwards) and days before the concert, there were still some tickets available - with all the covid restrictions and shit, still tickets available.
Os Alice - really niche portuguese band, have been to a concert of them, there were like 30-40 people and 20 were close friends to the band members.
Filipe Sambado - portuguese pop singer, most of his songs are criticising social habits/traditions + defending the LGBTQ+ rights.
Nerve - portuguese "non-rapper". His songs have a dark side. One of the saddest songs I've ever heard is by him and you won't find it uploaded anywhere.
As for international music, all the international music I listen to on a somewhat regular basis (I listen to music depending on my mood, so there's time I'll binge listen to an artist and then I'll go months without listening to them) is somewhat known. Kendrick Lamar, Foster The People, Bastille, alt-J, TDCC, Vampire Weekend, The Wombats, RATM, Denzel Curry.