100 bb vs 200 bb deep river massive differences

HJ (hero) vs BTN (villain)

Flop check check.
Turn hero bets 3/4, villain calls.

100bb scenario:

200bb scenario:

Why no shove range in the 200bb scenario?

While the 100 bb scenario has mostly block bets (1/3 size) and shoves (x6~)?

There is some difference in preflop ranges, hero flushes with 100 bbs is ~15% while with 200bbs is ~10%.

Villain flushes is around ~10% for both scenarios.

Equity pie and line graphs show similar distributions, a bit better for the 100bb hero line graph, I guess the pie doesn't reflect the nut flushes % as good given how there are the hands interested in shoving.

So more hands interested in shoving for 100 bb hero, but 200 bb hero still have a considerable % of nut flushes.

Another difference is 200bb hero betting for a smaller size on the turn and with more medium hands (I don't know why but the solver used that parameter).

So I understand the bigger portion of hands betting for a medium size.

But why not constructing a shoving range at all in the 200 bb scenario and using just an overbet size of x1.5? It accomodates K high and A high flushes there.

(In the 100 bb scenario, the shove mostly accomodates A high flush and move the king high and lower flushes to the blocking bet range. It could do similar with 200 bb, a shoving range for A high flushes and moving the king high flushes to the 3/4 and/or 1/3 bets).

What do you guys think is happening?

Thanks!