A lot of blocks that have a "function" that should be in the Functional Blocks tab are not. These include doors, trap doors, fence gates, buttons, pressure plates, drip leaves, pointed dripstone, sculk catalysts, sculk shriekers, TNT and Chiseled Bookshelves. Oak doors, trapdoors, buttons and pressure plates, along with dripleaves and chiseled booshelves are within the redstone tab, yet have a function outside of redstone, and thus I believe should be included in the Functional Blocks tab