So if the first ballot is extremely close, a couple of nobodies from the Virgin Islands could provide the tiebreak and decide if the contention is contested or not?
Coupled with a bunch of nobodies from American Samoa, probably Guam and North Dakota plus 5 from Louisiana and any other state that provides for unpledged delegates, whether that be initially or after a losing candidate releases them.
I think Colorado and Wyoming have unbound delegates as well. (Wiki seems to disagree?)
The delegate candidates in Colorado and Wyoming may pledge themselves to a candidate at some point during the local/State convention process, in which case they are bound. Alternatively, they can run as Uncommitted. Quite similar to the Virgin Islands process, in some sense.
We'll have a better idea of what to expect out of there this Saturday, when Wyoming elects 12 delegates at the County Conventions.
I give a full rundown of the possible unpledged delegates
in this post from my megathread.
The largest pot is by far in Pennsylvania, which will have 54 completely uncommitted delegates.