NOTE: made the following changes after this analysis
*Cut: Phyrexian Scriptures, Village Rites, Vampiric Rites, Revel in Riches; basic Swamp.
*Added: Invasion of Fiora//Marchesa, Resolute Monarch; Scorn-Blade Berserker; Dockside Chef; Syr Konrad, the Grim; Minas Morgul/Cabal Coffers (proxy stand-in, not the actual $30 card)
*Considering: Ayara, First of Lochthwain; Ritual of Soot

CORE STRATEGY
30 recursive creatures (Pow <2)
(7 w/ ETB triggers)
(4 w/ self-only-death triggers)
(3 w/ broad death triggers [2 include self, 1 not])
(4 self-saccing)
(5 general sac outlets [4 include self, 1 not])

26 Sac Outlets (22 repeatable)
(4 one-offs [2 instants, 1 sorcery, 1 morph])
(6 repeatable instant speed free)
(1 repeatable sorcery speed paid)
(5 self-sacrifice [1 instant+free, 1 free+timing, 1 echo, 1 pay/tap/sorcery, 1 pay/tap])
(3 repeatable instant paid)
(7 once-a-turn [2 tap free instant, 2 upkeep, 2 paid, 1 "Citadel" free mass sac])

BASIC ESSENTIALS
19 Ramp Sources (16 nonland cards)
(3 normal rocks)
(2 land ramp [1 once-a-turn from hand, 1 one-shot from library])
(5 "dorks" [2 basic, 2 sac outlet, 1 recursive self-sac])
(1 "altar")
(1 "life casting from topdeck")
(1 "creature discount")
(4 "death trigger token makers" [3 ally deaths, 1 foe deaths])
(2 "extra mana" lands)

20 Card Draw/Advantage Sources (16 repeatable)
(4 one-shots [1 tutor, 1 spell, 1 cracked rock, 1 cycling land])
(7 once-a-turn [1 monarch, 2 tap w/ cost, 1 tap w/ setup but free spell, 3 activated lands])
(3 recursive ETB creatures [2 draw, 1 basic land fetch])
(3 death/sac triggers)
(2 repeatable paid sac outlets)
(1 top-deck casting [Citadel])

6 Alternative Recursion
(4 creature recursion [2 one-shots (sorcery/land), 2 once-a-turn sac engines])
(2 artifact recursion [1 recursive ETB creature, 1 once-a-turn sac engine])

10 Removal (3 edicts, 1 sweeper, 6 targeted)
(3 one-shots [1 targeted spell, 1 slow non-artifact sweeper, 1 inefficient activated land])
(2 recursive ETB/death [1 smallish, 1 non-black/non-artifact])
(2 once-a-turn [1 edict, 1 targets only tapped])
(3 repeatable [2 death trigger edicts, 1 paid sac-outlet targeted])
(ALL only affect creatures [!?!?!])
(KIND OF LOW, even w/ repeatability, and several are a bit janky...)

6 Other Disruption
(4 Hand Attack [2 chosen @sorcery, 1 random @death, 1 chosen @ETB; all repeatable/recursive])
(1 recursive noncreature casting restriction [Hope of Ghirapur])
(2 graveyard hate [Ruin Rat, also Phyrexian Scriptures)

2 Commander Protection [Blessing of Leeches + Gift of Doom]

8 Life Gain
(4 small repeatable triggers [3 blood artists + Monument])
(1 small repeatable sac outlet [Vampiric Rites])
(1 large repeatable sac outlet [Krav])
(2 large once-a-turn [Cauldron + Trading Post])

ARTIFACT SUBTHEME
18 Artifacts
(7 recursive artifact creatures)
(11 noncreature artifacts [~4 ramp, ~5 engine, 2 haymakers])

2 Treasure Makers [Plunderer + Revel]
2 artifact creature token makers [Weaponcraft Enthusiast + Spawning Pit])
~1 card finding a specific artifact [Bogbrew Witch]

2 Artifact Payoffs
(2 recursion engines [Trading Post + Junk Diver])
(1 artifact-specific sac outlet [Trading Post])
(so.... is that enough payoff to properly call it a subtheme? Or do we just have some good artifacts and a couple cards that specifically work better with artifacts?)

WIN CONS
Aristocrats/Life Drain (7 supporting cards)
(3 "blood artists" [death trigger life drain])
(2 once-a-turn drain [Cauldron + Priest])
(1 "cast a creature" drain [Monument])
(1 "mass sac dome" [Citadel])

Go-Wide Beat-Down (6 supporting, +18-27)
(27/30 recursive creatures have 1 power [can attack])
(18/27 recursive 1 power creatures don't have competing tap abilities [the other 9 do])
(5/18+1/9 recursive 1 power creatures have flying [5 w/o competing tap abilities])
(6 combat token engines [1 once-a-turn, 1 nontoken death trigger, 1 recursive ETB, 1 recursive cast triggers, 1 recursion trigger, 1 charged sac outlet])
(1 one-shot token maker [Bastion])

Go-Tall Beat-Down (7 supporting cards)
(3 "grow" threats [Yahenni, Krav, Carrion Feeder])
(3 flying beaters [2 real, 1 token maker])
(1 tall aura [Fallen Ideal])

Oddballs (2 distinctive cards)
(1 Fallen Ideal "Voltron")
(1 Revel in Riches treasure accumulation)