As of 21w10a, all named ores in the game have a dedicated block tag named after the ore block in question, with the specific exception of nether quartz ore, which would be expected to have a block tag (#minecraft:quartz_ores) but does not have such a block tag.

Said tag may, however, be redundant given that nether quartz ore is the only type of quartz ore in the game (although a fix to MC-216217 may change this).