You need PCC’s for every country you lived in for over 6 months for the last 10 years since you turned 18. From what you mentioned it seems that you don’t satisfy that for India since you haven’t lived there for the last 10 years. As for your wife she will need PCC for HK, India and the US. Double check the dates you entered for your wife it’s possible you made a mistake. You’re wife most certainly needs for FBI ID History check if she lived in the US for the past 4 years.
For IEC, you’ll need to provide certificates for countries where you have spent time for six or more consecutive months since the age of 18.
FBI ID History (US PCC) is now electronic and quite fast.