Some of these breakers are "double-stuffs", meaning they cram 2 breakers into one breaker space. At first glance, Crouse-Hinds works a lot like GE does, offering half-width breakers. So you have to "see the full spaces" by counting half-width breakers 2 at a time, so you can see the phasing.
See also my treatise on how normal panels are laid out. Crouse-Hinds works like this, except for letting you "build your own duplex" using individually sold half-breakers.
So "Mid.K/Dish" and "Kitchen outlets (1)" are on the same phase. And "Office" and "Range" are on the same phase. Furnace and the one below it likewise. ___room and the one above it, likewise. Kitchen lights and the one above it area also on the same phase.
That empty half-slot is quite a bad thing, however. It needs to be gotten rid of PDQ so curious fingers don't get their fingers burned off. However due to the way Crouse-Hinds does their bus stabs, this is tricky - it's not like GE where any breaker can go anywhere. With Crouse-Hinds, there are "left-handed" half-breakers and "right-handed" half-breakers. So any given half-width breaker can only move up or down one FULL space (2 half-spaces).
Crouse-Hinds left the business decades ago, which complicates breaker sourcing. Don't use anyone's breaker, use only breakers UL-approved for this panel. Eaton CL is one type which is approved, and possibly certain Siemens breakers.
All your MWBCs need handle-ties anyway. If you can obtain Crouse-Hinds listed handle-ties, that will be fine, but honestly this might be one case for using a bent up piece of #12 wire lol for a handle tie, would be a Code violation of course, but better than no handle tie at all.
The MWBC on the right column can be handle-tied by swapping the wires on the "Dish" and "Kitchen outlets (upper)" breakers. (you can't swap the breakers because of Crouse-Hinds' left-hand/right-hand thing). That will put the circuits you've labeled "Box 2" adjacent, yet on opposite poles, ready for a handle-tie.
You are probably grandfathered and do not NEED handle-ties, but for the safety of repairmen, I would consider them anyway.
A 2-pole breaker is a valid substitute for a handle-tie. Further, if you use a 2-pole breaker on a MWBC, you are entitled to put 240V loads on it -- I've had a few cases where someone wanted to run a Euro kitchen appliance, and lucky them, they had MWBCs in the kitchen and were able to upgrade them to support 240V loads.
The Code legal way to add handle-ties (if you cannot source Crouse-Hinds ties) is to replace the breakers with tie-able, or 2-pole, breakers legal for this panel. I'm not sure on the Siemens breakers, but Eaton CL type breakers are definitely UL-approved. They don't exist in double-stuff, but from the knockouts and the diagram, your panel has just enough empty spaces that you can afford to convert every double-stuff to a full.