Others have suggested the shear hog, my suggestion is tool holders for APxT1135 insert geometry. This is a Mitsubishi Carbide insert geometry. Their APGT1135 insert is GREAT in aluminum. To cut a different material you swap to a different insert in the same holder. Mitsubishi Carbide has a good selection of inserts for a bunch of different materials and some reasonable starting parameters. Thus far it's been the most versatile single insert geometry I've used.
You can get holders for these inserts from several places. Tormach uses them in their face mill and some of their modular head cutters. Glacern sells them, and their variety of inserts here:
https://glacern.com/em90_2. You can also find chamfer mills which make use of the less-used edges of the inserts.
For any Tormach I wouldn't go too big on these tools. All of your solid carbide tools should be much smaller. I suggest ER16 holders and quality collets and collet nuts.