i would suggest something from catalinbread and wampler : Tweed man overdrive and Monarch distorsion. The tweed man is really good as preamp, after an other gain effect, allowing to add some color or to give an "amplifier touch" to the sound. Monarch has a beautiful voice, warm and yet quite sharp.
The DOD250 is really good, even better if you can blend a little bit of fuzz in there : Pacifier/ DOD fx76
A good old OCD wouldn't hurt, that's also a classic : ADHD overdrive
PedalPCB is more about gain effects, regarding modulation and other, so far, my favorite builds are from Aion or Lectric fx.
On my board, Aion's Meridian compressor (bass version) is always on for 3 years now. Good for everything, drums, guitar, bass, synth....
Spectron (Lovetone meatball), Blueshift (boss DC chorus 80's version) Echo DC (ehx old memory man) Dowtown fuzz (ehx octave multiplexer), Flintlock (A/DA flanger)... These circuits are just amazing, almost too good for mere mortals... Out of production, No wonder their prices are so high on used market. Even kits are hard to find with these circuits ! People know what's good for them : Almost always out of stock at musikding, you have to watch the website and strike first !
Delyk's 2nd chorale is great : a boss CE-2 clone with useful mods.
You can also buy an old CH-1 for 40 euros on used market. One with through-hole parts, not smd. Then mod it according to wampler's guide (see Boss Modding Group on facebook). Modded CH-1 can give a very beautiful modulation, just like the most expensive choruses. The CH-1 standard version however...feels weak and neutral in comparison.
I guess a "tool" would be useful to you, so you can run two effects in parallel, or blend some clean signal with an overdrive, etc. I recommend THCustomEffects's Pro-cessor :
https://www.musikding.de/Pro-Cessor-kit
So much possibilities with this...
You don't know how much you need it, until you try it.