OK, here are some options depending on how well you are tooled up.
And a couple things you really what to look for in a grinder or grinder setup.
First thing that is about a must is it need to have 5C collets.
Reason is that they are more abundant and have other shapes besides round.
Something as silly as a 5/16 hunk of HSS for a cutter in a lathe can be set in a 5C collet and ALL the angles be set by the holder to do the grinding.
You can simply set them up for each cut and cut several and then move on the the next cut.
Now next question is do you have a surface grinder? If so you are farther ahead to grab a couple additional items and use the surface grinder an the grinder part. First thing to find is a bench mount air bearing end mill fixture that of course takes 5C collets. Second is a spin index. Now, a spin index of reasonable quality can possibly be modded to be an air bearing by drilling and tapping a hole for an air line. Most of them have some level of longitudinal movement and with a fabricated finger act as a reasonable end mill flute sharpener. Now if you go that route a sine plate would round out the requirements for end mills giving you the ability to grind the ends accurately. And of course a sine plate has other uses.
The next thing to develop is a spindle holder for supporting spindles to hold large milling cutters for use in a horizontal mill. This may be as simple as a second matching spin index with a dead center mounted in a 5C collet. This setup will accurately (remember we are doing this on a surface grinder) sharpen and resize reamers as well as do any and all sort of OD grinding. Because you have 3 axis on a surface grinder you cover all the bases and if you get creative, you can build a plate that holds the spin index units that will give you X axis angle adjustment to OD grind tapers.
Here's the thing with machining. There are always multiple ways of accomplishing a task. You have to think about what you have on the shelf before adding items to the shelf. In a professional machine shop there is a tool budget to purchase any and all sort of expensive devices that may never get used. I have been around more than a few shops that had a like new Darex sitting in the corner with dust all over it and the guys would just go grab a new end mill when the one they were using got dull. Drill bits are no different. I learned to sharpen drill bits by hand my freshman year of high school when they still had a shop class and vocational agriculture was MORE shop class. Of course now it's animal science and they learn about dirt and the mating habits of livestock and little else at least at the local high school. I hate this has happened as I learned 4 marketable trades in that class. Those being carpentry, welding, small engine repair and basic mechanics. But back to my point. Home shop guys don't have a big budget for Darex E90 grinders and purpose built T&C grinders. We have to figure out what we do have and put that to use to accomplish the task at hand. Sometimes there are options that we don't look at because we don't realize that the mechanics of two things are pretty much identical like a spindex and an air bearing based grinding fixture for end mills. Sure there are compromises with some of this stuff. But at least in my mind working it all out is half the fun.