no9 Footsteps Package just landed in Unreal Marketplace. If you are Unreal Engine user then it might be worth checking. It is quite big and as name just states it contains various walking sounds:
https://www.unrealengine.com/marketplace/no9-footsteps-package
Detailed Sounds Listing
Main Footsteps Types (35+ SoundCues) :
- Bricks Debris Type 1 [200 sources]
- Bricks Debris Type 2 [78 sources]
- Cardboard Shreds [146 sources]
- Debris Rubble [200 sources]
- Debris Rubble Clangorous [93 sources]
- Dirt Road [120 sources]
- Forest Cover [80 sources]
- Glass Grit [132 sources]
- Glass Grit Clinging [6 sources]
- Glass Surface Thick [25 sources]
- Grass [13 sources]
- Hay Straw [99 sources]
- Ice Crackle [12 sources]
- Leafs Dry [122 sources]
- Loose Pavement Tiles [73 sources]
- Metal Scaffolding [50 sources]
- Mud Dirt Run [177 sources]
- Mud Dirt Walk [248 sources]
- Sand And Gravel [40 sources]
- Sand Run [22 sources]
- Snow Deeper [78 sources]
- Snow Shallow [133 sources]
- Stones Type 1 [191 sources]
- Stones Type 2 [30 sources]
- Tarmac Soft [48 sources]
- Thickets [107 sources]
- Water Puddle Deep [26 sources]
- Water Puddle Deeper [149 sources]
- Water Puddle Shallow [100 sources]
- Wire Fence And Bushes [67 sources]
- Wood Old Deck Type 1 [218 sources]
- Wood Old Deck Type 2 [86 sources]
- Wood Old Deck Type 3 [158 sources]
- Wood Other Wood Jumps [13 sources]
- Wood Other Wood Sounds Breaking [13 sources]
- Wood Surface Type 1 [45 sources]
- Wood Surface Type 2 [65 sources]
- Wood Surface Type 3 [34 sources]
Cartoon And Other Footsteps subfolders (250+ SoundCues) :
(sounds based on one or two (a/b) source samples)
- Alien [9 types]
- Arcade/8bitish [60 types]
- Comic Toys [29 types]
- Insectoid [15 types]
- Metal [13 types]
- Other [7 types]
- Raspy Noises [27 types]
- Robots Mechs [33 types]
- Steps Big Stomps [18 types]
- Steps Medium [23 types]
- Steps Small [26 types]