i see, the first picture you posted is calcium nitrate, like OP uses (me also).
whats confusing is his bag shows CAO yours CA.
its due do different conventions in each countries.
A useful calculator to convert between various different units, particularly relevant for fertiliser and crop nutrition such as converting concentration...
www.yara.co.uk
you can convert CAO to CA back n forth, then you will have about the same.
its dam confusing... european ferts show often oxides.
second you show is lime nitrogen, kalkstickstoff.
its mostly ammonia, slow release, for soil, acres, pretty much made to not dissolve directly.
Kalkstickstoff ist ein mineralischer Dünger mit Langzeitwirkung. Die Anwendung im Garten ist allerdings nicht ohne Risiken.
www.mein-schoener-garten.de
never used it myself, as its not a good choice for hydro, it can cause yield loss, in soil its a dif. story.
i think for the calcium sulfate they ment sulfate is a sec. nutrient and therefore can cause less havoc then nitrogen f.e.maybe.
i think sulfur isnt good in causing lockouts too as good as other elements.
No 2 arrow point each other like mg and ca f.e.
i know also for myself that plants can take quite some sulfur as i have 0.3EC pure sulfur in my tap.
one reason i take RO, but even seedlings dont die from this amount and every house n garden plant take it like a champ.
normally they give reliable science based infos there.
Dont think it makes your info to supplement in flower with sulfur less true.
Didnt they wrote somewhere its PH neutral more or less?
Similar to magnesium sulfate, which dont cause PH havoc to my knowledge.
They probably dont take stonemeals in to account as its not used in liquid hydro feeds and neutral to no media.