Of course! Those are just a few many. If there's interest I can share a couple more.

Eclid, Bow of the Hunt: Hunting Bow: Silent Moons + Huntsman's Prowess Jali'agul (He-Who-Endures): Dwarven Short Sword: Adsorb Health + Absorb Stamina Phage & Tyne: Twin Ebony Daggers: Shock Damage + Absorb Magicka Alarana, Song of Morning: Silver Sword: Fiery Soul Trap + Fire Damage Tharinholt: Warhammer: Notched Pick Axe + Shock Damage

You're very welcome.

I answered your first question in my Wolf guide, it appears to cap at 30. As to the second, the game has coded values: 'KillMoveRandom' (default: 50%), and 'DecapitationChance' (default: 40%). They only trigger as finishers. Its not a chance to do a one hit kill, but raterh a chance to finish an opponent below a certain health threshold, it essentially replaces the last hit or last couple hits you would have to do. Other things like positioning, enemy type, terrain/obstetrical and just plain chance seem to be factors. Also, if you use the slow time ability suggested in my Wolf build, finishers wont trigger for the duration as the kill cam uses a similar slow time effect. They are supposed to only happen on the last enemy in combat, as they leave you somewhat vulnerable.  The don't do extra damage: they're aesthetic 

Yep! If you're looking for a beast build, check out my Beast Master, he's based around reanimating beastly types.