What are SUAs booking into here?

When searching for a room for 2 adults and 1 child (1yo), only the king bed deluxe, king suite city view suite and penthouse suite show up.
Junior suite is available for my dates, but only shows up in a two adults only search. From upthread, the SUAs used to book into the king suite. Is this still the case?

Currently booked at the HC with plans to upgrade via SUA which I understand books into the junior suite. However, the HC Jr suite room description explicitly says "2 adults max".
The HR is likely too far out of town as we plan to walk/public transport everywhere as much as possible.