It has been my experience that the TC design is the most "universal" when it comes to 9mm bullets. That profile seems to get along with most pistols in terms of feeding and functioning, plus - they shoot well.
I prefer a flat base, but I'm not powder coating. White label 50/50 lube works well if you go that route. If you're really pushing the bullet fast, BAC is another option, but I found the 50/50 is a better choice for anything but absolute max velocities.
The Lee TC bullet is a good bang for your buck. Mine drops bullets closer to 124 grains than to 120 with my alloy and that's as heavy as I ever want to go in a 9mm. The Lee is a good place to start - if you like it, you can keep it and stop right there - done. OR, you can use the Lee mold to confirm the concept of a 120ish grain TC bullet and order a custom-made mold based on that profile & weight.
The groove diameters of 9mm pistol barrels are all over the map. You really need to slug your barrel to find a starting point.
YMMV