I've seen a lot of fractal/tessellating bedroom layouts, where the average walk distance is an important factor in their design, but nothing for tombs where the only traffic is likely to be when dropping the body/belongings off. So I decided to do some experimenting on compact shapes and maximizing space efficiency, and I came up with this.
Peasant Floor
Each tomb is a 3x3 space connected to a 3x3 stair room (only one stair). A random 11x11 slice of the tessellation will have an average of 7.166 rooms, which is more space efficient than pretty much anything except a grid of interconnected tombs (Where you have to walk through one to get to the next)
A lot of people might argue that 3x3 tombs are overkill for non-noble dwarfs, but it patterned easier and allowed for the construction of the following:
Noble Floor
Each tomb is 5x7, interspersed with stairways that lead up/down to peasant floors. The actual pathway connections between stairways and rooms could be adjusted to only have one entrance per tomb by constructing an outer ring to connect to each diagonal strand. Doing so however would prevent this pattern from being extended.
Both patterns can be extended indefinitely in any direction, and even layered on top of each other in any order by replacing any one directional stair with an up/down stair. The only real requirement is that at least one "Noble Floor" is required (somewhere) for access to the "Peasant Floors". I personally stacked mine as Peasant/Noble/Peasant, but any sequencing would work.
If people like these designs, I might be persuaded to upload a quickfort file for each of them