Haven't seen any shoegaze yet.
Boards of Canada "The Campfire Headphase" (vinyl preferable to CD)
My Bloody Valentine "m b v" (12" came with the CD)
Flying Saucer Attack "Distance" (2017 remastered vinyl is superb)
And something not related,
Beth Gibbons and Rustin Man "out of season" (definitely not Portishead)