"Which stretches" assumes there is one list. The review this page leans on draws one distinction between two kinds of stretch, and that distinction is the answer.
Fascia stretch over calf stretch
In its plantar fasciitis review, the AAFP ranks one stretch above the other in a single line: "Stretching of the plantar fascia is more effective than calf stretching and should be recommended for all patients with pain." So the stretch to ask about first is the one aimed at the plantar fascia itself, not the calf.
What the comparison showed
The same AAFP review describes a prospective randomized controlled trial that compared those two approaches. In it, patients who stretched the plantar fascia showed a greater decrease in "pain at its worst" and a decrease in pain with first steps in the morning. Notice the two measures: worst pain and first steps. Those are the outcomes the comparison reported, and the review does not promise results beyond them.
Stretching is one of several routes the research covers. A systematic review of physiotherapeutic interventions looks at physical treatments for plantar fasciitis, and a meta-analysis of shock wave therapy trials looks at another option. An open label trial that aimed shock wave therapy at myofascial points is a third paper for readers who want to see how such studies are built.
What to confirm, and with whom
The AAFP wording names the kind of stretch and does not give a routine. Ask your podiatrist or physical therapist to show you the plantar fascia stretch in person, how it should feel, and how often to do it. If you are around Itasca, ask at the visit rather than copying a stretch from a picture.
The clause readers skip
"For all patients with pain" is a recommendation to ask about, not a prescription for your foot. Whether it suits yours is a question for the person who examines it.