What would the upgrade look like from a Deluxe Corner Suite at the hotel?

The last time I stayed there, I think I booked a club room and got upgraded to a Deluxe Suite or even Deluxe Corner Suite on the club floor (19, IIRC). This time it wasn't much more $$$, so I just booked the Deluxe Corner Suite. Wondering if an upgrade from that level is even possible, or did I basically book into the top level, leaving myself no room to upgrade?

I'm a Spire Ambassador, FWIW. I'm asking in anticipation of two separate one-night stays on weekend nights in October.