Basically some of these gears were gone from the circulation and no one made it because of its a hassle and not worth it. Some of them are still quite useful and give more variety to midgame instead of just eden->grace->farm zeny till endgame.

Abyss Glastheim Weapons
Abyss Lake Equipment
Clergy and Soutane Odin Temple
Battle Processor
Biolab Gear
Devil Tower Weapon
Giant Snake Skin
Ghost Palace Equipment
Geffen Magic Tournament
Geffen Night Arena
Heroic Ring
Horror Toy Factory
Hugel Racing Cap
Illusion Dungeon Weapon
Infinity Dungeon
Legacy of Glastheim Equipment
Magical and Crimson Booster
Magma Dungeon
Mora Equipment
Ring of the Fallen (Orc Memorial Instance)
Royal and Guardian Equipment (Old Glastheim Challenge Weapon)
Royal Guard Ring
Sarah's Earring
Schwartz's Equipment
Sea Otter and Fur Seal
Varmundt Mansion's Sin Weapon
Temporal Armor
Temporal Manteau
Charleston Instance and Verus Equipment
Victory Wing Ears
Banquet of Heroes Equipment

None were level 5 weapon or level 2 armor to keep them away from endgame equipment. Do tell if some of the equipment is too good so i can remove them from the list, or if there are some equipment you want to add. Note that the enchant is still random, but now gives the maximum number you can get instead of more rng.

Also if it's possible, can you change the Race, Class, and Element enchant on the list to become one?
Like for example, Varmundt Mansion's Sin Weapon have enchant that give bonus damage to fire, water, earth etc damage->it becomes increase damage to all elements damage instead.