I'd be interested in seeing the OpenPhil chart for net giving disaggregated into the different areas

see here and here

^growth since 2015

1. As Katja's response alludes to, the non-Open-Phil chunk of GiveWell has more than doubled since 2015 (plus EA funds has gone from zero to $9M, etc.)
2. Although Open Phil's contribution to GiveWell has remained roughly similar since 2015, the amount they direct to EA as a whole has grown substantially