As the title says is there such a thing as an Escalation Squad sheet? Preferably one that collates all the information onto a single side of A4 as it seems quite wasteful to print out 4 seperate sheets, and very time consuming for the Tournament Organiser to sort through.

Not yet.

I would design it thusly:

Each round's additions are primarily Columnar.

Ships are left aligned, and in larger text than their upgrades.

The upgrades are spaced over, and are simply separated by a symbol suited for the task. Commas, Ampersands, what have you. So long as it's consistent and canny.

A knock-up in Google Drive.

Also, that fleet? I need to re-examine it, now that Wave IV exists.

In the huge ships I think you can find one?