Ok, lets go with Level 9 then.
Vuman Zeal/ Tempest/ War/ Forge Cleric, Feat: Magic initiate [Booming Blade] +4 Wisdom.
S: 16
D: 8
C: 14
I: 8
W: 20
Ch: 10
Skills: Athletics, Medicine, Insight, Perception, Religion.
Uses Greatsword (plus divine strike and booming blade), Full Plate, and isnt tied into using Shilleleigh (so can use magic weapons).
2 dump stats no warcaster. If using Vuman.
Death Cleric. 9
Strength 10
Dex 14
Con 14
Int 8
Wisdom 20
Cha 12
Uses toll the dead instead of weapons. Can often get two targets as well, 3d8 or 3d12 minimum
Uses warcaster with spiritual guardians.
Channel divinity +23 damage 2/shirt rest
Necrotic isn't resisted that much and you can switch to radiant easy enough.
Better at range. Better at skills, initiative, spell DCs connect more than 16 strength. Higher AC since you're resorting to two handed weapon.
Or your character same feat, arcane cleric potent cantrip, shillelagh and green flame blade or booming blade.
Potent cantrip with the 4E type cantrips. 1d8+10 damage is more than 2d6+3 and you get the same riders with +5 damage on them.
Arcane cleric better stats, more damage, higher AC, better initiative. Better in every way except strength checks and saves (+3 dex save counters that imho).
It's also magic damage. And I hit more often than you, -5 vs +3.
Spiritual guardians up kinda combos with booming blade. Take an extra 5 points if damage when I cast booming blade and an extra 5 points if you want to move away from my spiritual guardians.