Any idea which headphones I’d like?

As with speakers, the headphone and amp pairing is critical. As much as folks will try to help, choose a starting point (headphone amp + headphones) and figure it out for yourself.

Attend a can jam if possible.

I personally find "professional" reviews of headphones to be far better done than those of speakers. Comparisons with different amplification are included as are comparative notes to other headphones.

Stating your sound signature preferences / goals as well as your budget for the chain will help.

Since you have a healthy budget and are juggling #dadlife (I fully relate)...

Consider Abyss. Their flagship AB-1266 Phi TC which starts at ~5K. 

I’d say the one thing I’ve always really liked is a large soundstage.  I prefer a warmer midrange, with accurate bass vs analytical

The 1266 will deliver on soundstage (unlike most headphones) and on accurate bass. Midrange is neutral and can be nudged warmer with the amplification you choose. As I mentioned in my previous post, pairing with high quality amplification is a requirement.

If you want to step back (somewhat) in spend, then the Abyss Diana Phi. There is a current Agon listing for an unopened Diana Phi in the Bronze finish.

The Focal Utopia is my current reference, so I am partial to Focal (as well).

Flagship IEMs are another option, in case you haven't considered.

However --- I'll restate: you need to figure out the right combination of headphone and amplification for yourself.