It's hard to name the MVPs, since they vary from job to job. But I'll give it a crack:
1. Hitachi 10.8v 1/4" impact, drill, mini sawsall. I use one of these 3 tools multiple times a day for everything. They are so light and easy on my jacked-up wrists, and the batteries last forever (and fully recharge in under 30 minutes). Sure, it's only 1/4", so you're not busting lug nuts, but it does everything in the electronics and light carpentry realm that I ask it to. If it died today, I would overnight another one. The sawsall is brutal on the battery, but it's nice to have for a quick small cut.
Working on my properties:
1. Miter saw. I didn't know how much I'd use it until I had one. Not just for miters, but just for a quick 90-degree cut.
2. Circular saw, jig saw, oscillating multitool. Gotta have all 3. The OMT was a recent addition, and I don't know how I lived without it. It's become a game-changer
3. Pex tools. I still use the Zurn B-crimpers, but boy-o-boy do they have some mileage on them.
Working on my Vehicles:
1. HF extendable 1/2" ratchet. Love it, use it to death. I assume sockets are a given, so I won't list those here.
2. Earthquake 3/4 Impact. I'm getting old, I'm not grunting and straining on big bolts anymore. The 3/4 impact gets the job done.
3. Craftsman raised-panel ratchets. No, I'm not trolling y'all. My monkey brain always reaches for them. I have 50 other ratchets, but I always seem to grab those old craftsmans first, lol. Well, those and my #1 HF extendable.
Electrical/Electronics work:
1. Fluke Meters. Gotta have them.
2. Non-Fluke Meters. Gotta have them for the things the Flukes don't do, lol.
3. Sunflag JIS Screwdrivers. My go-to philips. nice fit, never rounded a screw
4. Xcelite hand tools. Strippers, dykes, flush cutters, small precision drivers