We can probably fix ppc64le by adding the chromium ppc64le patches (they're present on the main chromium package, might as well add it to qt6-qtwebengine).

Unless we're prepared to start dropping architectures from packages that have QtWebEngine support, and retire packages which do not, I'm not sure how we completely drop QtWebKit. In the meantime, we can at least minimize its usage. For starters:

libalkimia: https://src.fedoraproject.org/rpms/libalkimia/pull-request/5
kmymoney: https://src.fedoraproject.org/rpms/kmymoney/pull-request/4
skrooge: https://src.fedoraproject.org/rpms/skrooge/pull-request/3

We can probably fix ppc64le by adding the chromium ppc64le patches (they're present on the main chromium package, might as well add it to qt6-qtwebengine).

That would be great, as kinoite and flatpaks would benefit, but many of these are also still on Qt5.

picard: https://src.fedoraproject.org/rpms/picard/pull-request/6

git-cola: https://src.fedoraproject.org/rpms/git-cola/pull-request/9

choqok: https://src.fedoraproject.org/rpms/choqok/pull-request/1

After the above fixes, updated list for rawhide/f41:

arc-gui-clients  
gambas3-gb-qt5-webkit
goldendict
kexi (optional, for web form widget)
kf5-kdewebkit  (used by kmymoney on P&Z, kwebkitpart)
kf5-libkgeomap  (no more dependents)
kmymoney  (P&Z only, next release should drop it)
kreport  (optional, for web plugin)
kwebkitpart  (no more dependents)
ldoce5viewer (RPMFusion; latest upstream now uses PySide6)
openshot
otter-browser  (can use QtWebEngine instead)
psi  (optional, can use QtWebEngine instead)
qgis  (can use QtWebEngine instead, and also supports Qt6)
qmc2
quiterss
recoll  (can use QtWebEngine instead)
trojita
webvfx
wkhtmltopdf

Still more work to do, but it's far enough that I could drop qtwebkit in the F41 KDE5 flatpak runtime, with the only cost being the trojita flatpak.

kexi: https://src.fedoraproject.org/rpms/kexi/pull-request/3
kreport: https://src.fedoraproject.org/rpms/kreport/pull-request/5

Updated list for rawhide/f42:

arc-gui-clients  
gambas3-gb-qt5-webkit
goldendict
kf5-kdewebkit  (used by kmymoney on P&Z, kwebkitpart)
kmymoney  (P&Z only, next release should drop it)
kwebkitpart  (no more dependents)
ldoce5viewer (RPMFusion; latest upstream now uses PySide6)
mythtv  (RPMFusion)
openshot
otter-browser  (can use QtWebEngine instead)
psi  (optional, can use QtWebEngine instead)
qgis  (can use QtWebEngine instead, and also supports Qt6)
qmc2
quiterss
recoll  (can use QtWebEngine instead)
smtube  (RPMFusion)
trojita
vacuum-im
webvfx  (no more dependents)
wkhtmltopdf

kmymoney: https://src.fedoraproject.org/rpms/kmymoney/pull-request/5

otter-brower https://src.fedoraproject.org/rpms/otter-browser/pull-request/1

Updated list for rawhide/f44:

gambas3-gb-qt5-webkit
goldendict
kf5-kdewebkit  (used by kwebkitpart)
kwebkitpart  (no more dependents)
mythtv  (RPMFusion)
openshot
otter-browser  (can use QtWebEngine instead)
qgis  (can use QtWebEngine instead, and also supports Qt6)
qmc2
quiterss
smtube  (RPMFusion)
trojita
vacuum-im
webvfx  (no more dependents)
wkhtmltopdf