Help finding Monsters by Image "or look"

[Frost_Spawn]

Hey i'm a new DM in general, and i've probably only have about a couple years worth of playing in DnD & Pathfinder. So I don't know what all the different types of monsters that exist.
What i'm looking to do for my game is, I already have an idea of monsters that I want to use, and will be making some custom monsters. What I need is a "base" monster that is preexisting that is somewhat close to all the monsters I'll be using. I have an app on my iphone called "game master" with a compendium of every monster in PF, but it doesn't have an image or descriptions of them.

I found a few links online to search for a monsters by terrain, CR, etc. but what i'm looking for is search or best way to look for existing monsters by image. Short of literally buying every bestiary and looking at every single existing monster...

I don't even know if what i'm looking for exists, but if anyone has any other ideas on how to help me i would be grateful.

here are a few monsters I will be using that i need an existing monster equivalent or similar.
https://diablo.gamepedia.com/Spike_Fiend_(Diablo_II)
-for this one i was thinking of taking the porcupine stats and just describing it differently

https://diablo.gamepedia.com/Wendigo_(Diablo_II)
https://diablo.gamepedia.com/Tainted_(Diablo_II)

I should probably mention that yes, i am running a PF game based on the world of Diablo 2. If that wasn't already apparent.

[CrystalSeas]

There are a number of image matching programs out there.

You can start with Google search.

Just upload your target image to the search, and Google will match that image with its search results.

[Cintra Bristol]

Or if your list isn't absurdly long, you can post here and see if people can advise you. Caveat - I haven't played Diablo so I can only base my suggestions on the images I can google.

I googled "Diablo Spike Fiend images" and the first couple of images look a lot like a Howler to me.

The Diablo Wendigo doesn't look exactly like a Pathfinder Wendigo, but you might be able to use that one; a more likely match might be the Pathfinder Yeti.

And the Diablo Tainted is apparently a reptilian hellhound, so I'd suggest adapting the Pathfinder Hellhound.

[Frost_Spawn]

Thank you sooo much Cintra Bristol for your help and recommendations. the Howler is actually quite Perfect as it mimics the spike fiends attacks and description! I was looking at the yeti, it seemed like my best choice as well.
The list of monsters is quite big though, however I don't need all of them right at this moment, the few i listed I will be needing for my next session and I was going crazy trying to find an equivalent monsters.
Is there a specific spot on these forums that would be better place to make a post listing them when I do need them?