Block Variants provides you tons of blocks that are missing in vanilla like Polished Diorite Walls and Amethyst Slabs.
It also offers alternate ways craft things e.g. Furnances from Granite (use Just Enough Items to find out more).
(1.19.2+) requires Ametrin API
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Minecraft: Java Edition
1.21
1.20.6
1.20.4
1.19.4
1.16.5
Platforms
Forge