i find there are different products that work extremely well, some cost and some are cost effective.
Several I really on are wax (beeswax the most, any wax will do) so far hasn't failed in any material or cutting application.
Two for Aluminium are my go too's (I'll post them later too ensure the naming is correct).
Couple of heavy cutting oils, mainly for steel.
And final a synthetic cutting flood coolant fir everything, love the stuff as it allows me to cool and get maximium cut and life out of tooling, with little to no clean up or other issues (note little to no is the phrasing here) again I share it correctly. Only draw back is the mill isn't fully enclosed, but its getting closer.
Update:
Aluminium: Relton A-9 and Tap Magic Aluminum
Steel Oil: Relton Rapid Tap HD Cutting Fluid and WD40
Flood (and on anything even hand applied):
https://www.kbctools.ca/itemdetail/1-123-045