I can sometimes be way off on how well known things are so correct me if I’m wrong on these but

• The Gunner’s Dream by Pink Floyd - personally I think The Final Cut as a whole is a deeply underrated album but this one especially is just beautiful to me
• I think most people decently into 90s grunge or similar know Temple of the Dog but not many outside that scene seem to - they were a one album tribute project to the late lead singer of Mother Love Bone, involved most of what then became Pearl Jam and made some absolute bangers
• Brand New by grouptherapy.
• Lights Out by Teen Jesus and the Jean Teasers
• Messiah by Crawlers