I'm not doing very well. 1% on 10K of HSA funds (but there is a fee to move it to brokerage, so I do it every other year), 1.56% on 10K cash inside the Roth (will be gone next rebalance), and worst of all is $35K getting 0.35% at the credit union. They have a 30 transactions a month game that would be too hard to play. The CU gives it's customers a kick-back in January, though. The magnitude depends on your deposits and loans. For years I got $100, but lately it's only been $50. Doesn't come close to the $600 or so (.02-.0035)*35K that I'm not getting. But it's my billpay account, so moving it would be a pain.
I don't think you should be concerned with returns on the HSA money - just that the administrator of your account isn't skimming ridiculous fees.
The key with HSA is that you already received the tax deduction for the contributions, so you're well ahead of the game from the start. HSA administrators are notorious for charging high fees and giving low yields on funds kept with them. Some do offer brokerage options...for an additional fee and/or certain account funding minimums. If your HSA is getting any kind of yield after fees, then don't read anything more into it...that's fine.
Consider moving your Roth. Many places will give you a cash bonus on day one just for moving it. Your benefit, additionally with getting a better yield would be in excess of the short-term hassle of changing the bill pay.
I don't believe it's worth getting too worked up about not getting the absolute highest yields out there. Where we are today is significantly better than any time during the past few years and all indications point to at least another 6 months of increasing rates. Seriously consider moving what funds you can. Very soon, 2% is going to be near the low end for FDIC insured high yield saving accounts. Customers Bank (PA -but available to anyone online) is now at 2.25% on their FDIC insured money market account.
If you are extremely reluctant to moving the funds away from your credit union, then inquire about their best CD rates. Certainly you don't need the entire $35k available immediately and picking up the lowly 0.35% yield. Many credit unions have special CD rates. See what they are offering for 1 or 2 years - maybe put $10k into a one year and $10k into a 2 year, leaving $15k at the 0.35% rate for easy accessibility. But the CDs should easily be able to get you 2%-2.5%.
We have an account for our daughter at AMEX getting 1.75% in their high yield savings. I briefly considered moving it out to another bank offering 2.0% for the savings account. However, AMEX has 2.4% for 18 month CDs. At this time, it's nothing to get excited about. However, the ease of clicking a button and moving funds that aren't needed short-term from 1.75% up to 2.4% is unbeatable. Again, check the CD rates at your CU and ask if they are offering any specials.