41 cards where (the card types include “bat” or the text includes “bat creature token”) and it’s legal in Commander

Mirkwood Bats (The Lord of the Rings: Tales of Middle-earth #95)
Desecrated Tomb (Core Set 2019 #230)
Dirge Bat (Ikoria: Lair of Behemoths #84)
Voidwing Hybrid (Phyrexia: All Will Be One #221)
Aclazotz, Deepest Betrayal // Temple of the Dead (The Lost Caverns of Ixalan #88)
Aclazotz, Deepest Betrayal // Temple of the Dead (The Lost Caverns of Ixalan #88)
Timothar, Baron of Bats (The Lost Caverns of Ixalan Commander #210)
Basilica Screecher (Ravnica: Clue Edition #105)
Screeching Scorchbeast (Fallout #49)
Stirge (Commander Legends: Battle for Baldur's Gate #150)
Gurmag Swiftwing (Ravnica: Clue Edition #113)
Ruin-Lurker Bat (The Lost Caverns of Ixalan #33)
Skeletal Vampire (Commander 2017 #126)
Regal Bloodlord (Core Set 2019 #222)
Eyetwitch (Strixhaven: School of Mages #70)
Sanguine Evangelist (The Lost Caverns of Ixalan #34)
Deep-Cavern Bat (The Lost Caverns of Ixalan #102)
Ghastly Gloomhunter (Zendikar Rising #103)
Courier Bat (Innistrad: Crimson Vow #102)
Blight Keeper (Ixalan #92)
Bat Whisperer (Innistrad: Midnight Hunt #86)
Blighted Bat (Jumpstart #205)
Marrow Bats (Commander 2013 #82)
Malakir Familiar (Jumpstart #253)
Belfry Spirit (Guildpact #2)
Bloodhunter Bat (Jumpstart #210)
Vampire Bats (Duel Decks Anthology: Garruk vs. Liliana #35)
Sengir Nosferatu (Time Spiral Remastered #136)
Blind Hunter (Ravnica Remastered #166)
Screeching Bat // Stalking Vampire (Innistrad #114)
Screeching Bat // Stalking Vampire (Innistrad #114)
Duskhunter Bat (Modern Masters 2015 #81)
Grimclaw Bats (Darksteel #45)
Bat Colony (The Lost Caverns of Ixalan #5)
Leering Onlooker (Murders at Karlov Manor #91)
Bartizan Bats (Core Set 2020 #319)
Foundry Screecher (Kaladesh #82)
Dementia Bat (New Phyrexia #55)
Sengir Bats (Homelands #57a)
Dakmor Bat (Portal Second Age #68)
Greed's Gambit (The Big Score #8)
Gloomhunter (Rise of the Eldrazi #111)
Kelinore Bat (Magic 2010 #101)

The arc of my blade has carved a path of light to the end of these results.