I'd say the many/most have been with the company 10+ years (low attrition!). New hires are generally younger, but new hires that are more senior (IC or Manager)

I'd say the many/most have been with the company 10+ years (low attrition!). New hires are generally younger, but new hires that are more senior (IC or Manager) are generally older. That's not surprising, is it?