www.nexusmods.com/skyrim/mods/9557/? - Start as a Necromancer.
www.nexusmods.com/skyrim/mods/46851/?
www.nexusmods.com/skyrim/mods/66882/?
www.nexusmods.com/skyrim/mods/12094/?
www.nexusmods.com/skyrim/mods/40607/? - Quest.
www.nexusmods.com/skyrim/mods/36049/?
www.nexusmods.com/skyrim/mods/68587/?
www.nexusmods.com/skyrim/mods/60783/?
erkeilmods.altervista.org/skyrim/lord-of-the-dead/
www.nexusmods.com/skyrim/mods/36158/?
www.nexusmods.com/skyrim/mods/9726/?
www.nexusmods.com/skyrim/mods/58069/?
www.nexusmods.com/skyrim/mods/46515/?
www.nexusmods.com/skyrim/mods/31957/?
www.nexusmods.com/skyrim/mods/26706/?
Most of these are either outdated or just misc. stuff such as robes and among other bits like VFX. Test out and see what's good for you.