My Dying bride got me into doom, "turn loose the swans" had a major impact on me and my life. It broadened the style of music i listened to. When i first heard them i said "yes, that's it!" even though I never heard them before. Still the GODS of doom metal
Anathema came around the same time, Serenades is one monster slab of emotional doom metal, they have been extremely conistant up until the last album which i thought lacked something. I still cannot describe the impact of emotions this band gives me, MY FAVORITE BAND EVER
Paradise Lost i got into after these bands, and although not as gothic or doomy as early MDB or anathema they were still very dark and emotional. ICON and Draconian Times I fell in love with, I rediscovered Shades Of God not too long ago and decided that it's a masterpiece too. Some of the later stuff is great too, but the early days were the best
Overall i would say Anathema then MDB then paradise lost