Lovecraft and Mythos anthologies? There's so many.

[Robert Adam Gilmour]

Perhaps too many? I haven't touched any of mine yet so I don't know how long I'd have an appetite for it.
I have a hard time imagining any other writer having so many tribute anthologies. They must sell because this is a crazy list.

Black Wings 1-5 (ed) ST Joshi
Madness Of Cthulhu 1-2 (ed) ST Joshi
A Mountain Walked (ed) ST Joshi
Shadows Over Innsmouth (ed) Stephen Jones
Weird Shadows Over Innsmouth (ed) Stephen Jones
Weirder Shadows Over Innsmouth (ed) Stephen Jones
Lovecraft Unbound (ed) Ellen Datlow
Lovecraft's Monsters (ed) Ellen Datlow
New Cthulhu 1-2 (ed) Paula Guran
Book Of Cthulhu 1-2 (ed) Ross E Lockhart
Cthulhu Fhtagn! (ed) Ross E Lockhart
Gods Of HP Lovecraft (ed) Aaron J French
She Walks In The Shadows (ed) Silvia Moreno-Garcia & Paula R. Stiles
Swords & Mythos (ed) Silvia Moreno-Garcia & Paula R. Stiles
Historical Lovecraft (ed) Silvia Moreno-Garcia & Paula R. Stiles
Innsmouth Magazine (ed) Silvia Moreno-Garcia & Paula R. Stiles (you can get these in omnibus form)
Future Lovecraft (ed) Silvia Moreno-Garcia & Anthony Boulanger
Dreams From The Witch House (ed) Lynne Jamneck
Cthulhu Lives! (ed) Salome Jones
Dark Rites Of Cthulhu (ed) Brian M Sammons
Steampunk Cthulhu (ed) Brian M Sammons & Glynn Owen Barrass
World War Cthulhu (ed) Brian M Sammons & Glynn Owen Barrass
Cthulhu Mythos Megapack (Wildside ebook)
Resonator: New Lovecraftian Tales From Beyond (ed) Scott R Jones
Lairs Of Hidden Gods 1-4 (ed) Ken Asamatsu
Whispers From The Abyss 1-2 (ed) Kat Rocha
Cthulhu's Reign (ed) Darrell Schweitzer
That Is Not Dead: Tales Of The Cthulhu Mythos Through The Centuries (ed) Darrell Schweitzer
Madness On The Orient Express (ed) James Lowder
Worlds Of Cthulhu (ed) Robert M Price
Acolytes Of Cthulhu (ed) Robert M Price
The New Lovecraft Circle (ed) Robert M Price
Beyond The Mountains Of Madness (ed) Robert M Price
Conqueror Womb: Lusty Tales of Shub-Niggurath (ed) Justine Geoffrey & Scott R Jones
Cthulhu Cymraeg (ed) Mark Howard Jones
Starry Wisdom (ed) DM Mitchell
Songs Of Black Wurm Gism (ed) DM Mitchell
Cumbrian Cthulhu (ed) Andrew McGuigan
A Mythos Grimmly (ed) Jeremy Hochhalter
Letters To Lovecraft (ed) Jesse Bullington
Tales Of The Cthulhu Mythos (ed) August Derleth
Apotheosis: Stories of Human Survival After The Rise of The Elder Gods (ed) Jason Andrew
Eldritch Horrors: Dark Tales (ed) Henrik S Harksen
Urban Cthulhu: Nightmare Cities (ed) Henrik S Harksen
Cthulhu 2000 (ed) Jim Turner
Eternal Lovecraft (ed) Jim Turner
Tales Of The Cthulhu Mythos (ed) Jim Turner (not to be confused with Derleth version)
Children Of Cthulhu (ed) John Pelan & Benjamin Adams
New Tales Of The Cthulhu Mythos (ed) Ramsey Campbell
H.P. Lovecraft's Cthulhu Mythos: A Weird Tales Retrospective (ed) Betancourt & Weinberg
Eldritch Blue: Love & Sex in the Cthulhu Mythos (ed) Kevin L. O'Brien
Pyrate Cthulhu 1-2

There's a magazine called Necronomicum.
I don't know if everything in Lovecraft eZine, Crypt Of Cthulhu and Lovecraft annual magazines are all Lovecraftian or if it's just like Asimov's magazine and Clarkesworld.

Apologies for any errors.