I would prefer natural stone cladding instead of exposed brick decor. This is simply because natural stone cladding can provide a classy and elegant appeal to the home. Also, it is easy to maintain and lasts long. Another reason I would prefer stone cladding is that it provides a modern touch to the interiors. I would also prefer patterned tiles or textured walls over exposed brick as I feel that it makes a space look more lively and beautiful.

Hi Abhi, All 4 have their own pros and cons. AAC, CLC and fly ash bricks are low in weight compared to clay bricks. Clay bricks are locally available. AAC and CLC block also ensure thermal insulation. Fly ash bricks are not suitable for cold weather. Depending on the location of the plot, easy availability of material you can choose among above four. Although I say, you can go with AAC blocks. -Thanks, -Neelam -Lines and Profile

Exposed colorful conduit is  or a fine groove cut to size and then covered up with bricks as also an option.

Natural 22mm is better.