Hi Nem, a few personal comments on your proposals.
On a general level, I advise not to reference the Forgotten Realms setting anymore on item descriptions. We have an over abundance of those on the server. This is a Ravenloft server and it would be preferable to focus directly on fleshing out the lore of the Demiplane of Dread instead. That is not to say there is no place for items from other settings, but in those cases I'd focus on items that have a distinctive sinister vibe about them, or that are filling a specific purpose.
Cloak Of Charisma
Greater Cloak of Charisma
We already have our fair share of items that casts Eagle Splendor making this aspect redundant. As for the greater cloak, spells that are unique to a particular class are best not included in items. It takes away from the uniqueness of the class, and decreases the need to team up with others to benefit from it.
Cloak of Protection
Greater Cloak of Protection
I think you made a mistake here. Your Cloak of Protection is more powerful than your Greater Cloak of Protection. +1 universal save without any downside is too powerful. I'd actually divide those in three different cloaks, each granting +1 on one of the saving throw types, but at the cost of a small damage vulnerability to either slashing, piercing or bludgeoning. That way they are both beneficial and slightly risky to use at the same time.
Lords Cloak
That's 2 significant skill increases and a saving throw bonus without any downsides. Maybe if it was just a +1 bonus to either skills, but even then we already have the Blessed Knightly Cloak that grants a +1 will bonus.
Soldiers Cloak
I suggest to pattern this one along the lines of the Knightly Cloak and Blessed Knightly Cloak. Cold Resist 5/- (as staying warm really is what lowly soldiers would use a cloak for), +1 Discipline on the Soldier's Cloak itself, and the greater version being Cold Resist 5/-, Saving throw bonus +1 Fortitude, +1 Discipline.
Cloak of Eyes
While I have nothing against the item itself, I question if it would ever be worn aside from the very brief and occasional times where there is an attempt to locate a hidden door or when it is briefly swapped to cast the spell. You might as well just come up with a consummable item to cast the spell.
Broken Heart of Innocence
Heart of Innocence
Purest Heart of Innocence
Let us not start the spell slot items debate again, but it just won't happen under my watch. Spell slots items only reinforce characters that are already advantaged with their spellcasting abilities. If others devs wants to add them, fine, but it won't be me. Balance wise it is best to have items that cast spells using spellcharges. You can have more characters use the item that way.
Duelist Belt
Master Duellist Belt
I'd add a third belt. With the first one being Discipline +1, Parry +1, with the higher versions getting downsides increasing with the items power.
Tunnel Ranger Belt
Granting the benefit of a feat through an item is especially powerful. It needs to be counterbalanced with something equally harmful to the user. Furthermore, dwarves have darkvision by default, it is not a property they'd need to imbue in a magical item.
Belt of the Balance
An alignment restriction to true neutral and neutral good characters seems in order here.
Defender of Purity
Redundant with the Guardian shield
Shield of the Raptor
That seems fine to me, but +1 AC is the property of steel. That should be the material it is made of.
Mark of the Hawk
Razors Edge
Sterkt Hjerte
Shard of Niflheim
Those are fine as is. Not sure they would see much use compared to other items available.