This Mod adds Stairs, Wall and Slab variants of various Blocks such as Tuff, Calcite, Terracotta and Concrete (Including some own preferences like Wool and Iron, Gold etc

This Mod adds the Following Wall, Slab and Stairs variant that are missing on the Vanilla Version:

• Terracotta Slab, Stairs and Walls
• Glazed Terracotta Slab, Stairs and Walls
• Concrete Slab, Stairs and Walls
• Tuff Slab, Stairs and Walls
• Smooth Basalt Slab, Stairs and Walls
• Calcite Slab, Stairs and Walls

As well as the following custom variants for Stairs, Slabs and Walls:

• Wool Slab, Stairs and Walls
• Iron Slab, Stairs and Walls
• Gold Slab, Stairs and Walls
• Diamond Slab, Stairs and Walls
• Emerald Slab, Stairs and Walls
• Lapis Slab, Stairs and Walls
• Redstone Slab, Stairs and Walls
• Netherite Slab, Stairs and Walls
• Obsidian Slab, Stairs and Walls
• Crying Obsidian Slab, Stairs and Walls
• Dirt Stairs, Slabs and Walls

Links:
CurseForge
Modrinth
GitHub