Hi Moshe,

The population growth is the same across all Arab countries (and many non-Arab ones!)

https://ourworldindata.org/explorers/population-and-demography?facet=none&country=ISR~MAR~DZA~LBY~EGY~YEM~OMN~JOR~SYR~IRQ~SAU~QAT~BHR~KWT&hideControls=false&Metric=Population&Sex=Both+sexes&Age+group=Total&Projection+Scenario=None

It’s simply fertility rate on the Arab side.
Now that fertility rate has been shrinking while the Israeli has remained stable or grown slightly as the share of Orthodox Jews increases (through reproduction)