This is true for many city-states worth considering, like the Corinthians or Rhodians, but it seems many get bored with too many Hellenic city-states. I guess eventually things have to be rearranged like in Total War, grouping those who have similar a culture, and making it clear what do they have in common. A few things I had already written down for the Syracusans: Epotis: tech for ramming bonus. The "the Corinthian triremes" "had specially strengthened cat-heads for the purpose of ramming prow to prow", and "the Syracusans had adopted the Corinthian practice of strengthening their ships at the prow", from Ancient Greek Warship 500-322 BC, by N. Fields. Mamertine Mercenaries: mercenary ship unit that can train land warriors. They were employed by the Syracusans from Italy. Could have loot bonus, since they were raiders of land and sea, the Syracusans had a lot of trouble with them. Chain ships: set up temporary "chain walls" between ships, which would stay fixed, if somehow possible. They "moored at anchor both small vessels and triremes as well as merchant-ships, with iron chains between them, and to the vessels they built bridges of boards", from Diodorus Siculus.   There's another thing for when I post about ships (@Asher, since you asked for tips, that'll come at some point), which is that  "notably the Corinthians and Syracusans, preferring to ram prow to prow and decide the issue by boarding, beefed up the forward structure —ram, bows, outrigger cheeks— and reinforced the deck to carry a sizable contingent of fighting men", from Sea and Seamanship in the Ancient World, by L. Casson. Thus they should be able to transport more people by ship than other Greeks (but not than Romans, for example).   I'd certainly not include the "Mirror Tower or Heat Ray Tower", its feasibility is doubted, and its earliest mention comes from Lucian of Samosata, four centuries later.

Archeologically, the term Rhine-Weser Germanic is used after the Roman conquest and the creation of the Roman empire. What you have in mind are the Ubii, the Usipetes and the Tencteri but their identification is uncertain. Materially they are Celtic. The Ubii had the oppidum of Dünsberg. 

Sadly not all shortcuts work in atlas but iirc there is either the game console you can use to toggle the dev overlay or something jn the menu that allows you to run js

https://en.wikipedia.org/wiki/Altar_of_Hieron https://www.siracusaculture.com/en/2021/04/21/the-altar-of-hieron/ Possible wonder?

And here I was just 3 days ago thinking this was not how the game was supposed to be I can confirm, right now I was having some fun with my flying ranged infantry.   You bring them down by, while on ranged mode, posting them again on the walls, and then unposting them.