Which Apple replacement for 27" iMac?

Now that 27" iMacs are discontinued, I'd like some help thinking about replacing my 2014 iMac.

My question: To replace my late 2014 27" iMac, which current Apple configuration/hardware combination would best work for me?

Requirements & preferences:

• at least 27" screen
• at least 2TB storage
• at least 3 USB ports
• apps I use most: Chrome, Lightroom, Photos, Photoshop.
• likely future use: home video editing

I realize this is a complex question (and I'm sure my list betrays just how hardware-savvy I am not), so if you have links to articles that cover just such a decision, that alone will be very much appreciated. :)

Tom