Sounds goodWhat about
1. Harappas
2. Vedic
3. Maurya
4. Kushans
5. Gupta
6. Early Hindu Kingdoms
7. Late Hindu Kingdoms
8. Delhi sultanate
9. Early Mughals
10.
11. Maratha empire
12.Maratha empire
13.Sikh empire
14. Sikh empire
15. British raj
...
The same problem is true for most of the suggested list. For example Hindu kingdoms outlasted the Mughals. Civs are not eras. It's possible to put together a list based on weapons developments and clothing styles. There are more than half a dozen distinct sword types, for example. All that's needed is time.The problem is the Bactrians is they existed the same time as the native Indian Mauryan Empire, ...
Them existing at the same time wasn't really my main concern (Since India was never really unified), although they really existed at nearly the exact same time plus or minus 50 years or so. The main problem was the armor being thoroughly Greek (Which I feel we have enough of).The same problem is true for most of the suggested list. For example Hindu kingdoms outlasted the Mughals. Civs are not eras. It's possible to put together a list based on weapons developments and clothing styles. There are more than half a dozen distinct sword types, for example. All that's needed is time.