This adventure was fun and challenging, especially on Olympian. The city seems to reach its sprite limit because of GOATS! I hate them!
Back to the topic, there are three Super housing blocks I tried to modify and improve. All of them work in one agora service.
1. The first one is the kite block that is derived from Senseisan's version. I modified the block a bit to get 86 houses. The citizen's movements can hurt eyes @@
2. The second one with a long shape is modified from Plebus' Trojan War Block. It's the easiest to build. I reach 83 houses with this one. Simple and Aesthetic.
3. I made myself the last one. It's the square shape with a little bit tricky. I got 84 houses for the first try that I posted the layout in forum's favorite housing blocks thread. The save has 88 houses version. There is also a barebone housing block with 89 houses next to it. If you don't like tax or don't care about hygiene, you can get 90 houses. There's a restriction on the direction. So the block only works with the exactly southeast direction in the save. There's also a version for northeast direction in the save. Another caveat is that the block needs additional maintenance in the back
The housing blocks used some tricks that are fountain/infirmary trick and the agora backdoor trick.
Bonus: There is also an Elite housing block that is worth a look. 40 elite houses in one grand agora service. Two column rows on the sides can be replaced with hedge mazes to reduce the number of monuments in the middle. It's not the fastest way to build full 20 horse companies, but it's interesting and efficient.