Not sure what size ear tips you use but perhaps using the Tennmak tips would work? They have a 'skin' that doesn't attenuate treble like open cell foamies like the others do. You may have to cut them shorter to close the case, depending on the TWS/case. 4.5mm or 5.0mm bore available iirc.
https://www.amazon.com/TENNMAK-Earphone-Mushroom-Earphones-4-5mm-Small/dp/B0828XP9RM/
Not my pic, from Amazon cust:
There's also the ikko iplanet or misodiko TWS pro style tips that fit more TWS cases. Also has a 'skin' over the foam. Their small are more of a medium small for Ikko (11.5mm) and medium for misodiko (12.0mm) when I measured them.
The generic air pods pro tips can be used if the plastic app adapters are removed from them. My 2nd favorite foam tip for TWS. Also skinned.
And my favorite tips for comfort are generic 'ball' style ts400 tips from AliExpress. They have 4.5mm (t200 size) and 5.0mm (t400) sizes, these have standard open cell foam. Fortunately with the rounded tip they don't block/attenuate the highs as much as the standard style tips (imo).