I'm curious as to how they look promising? If you tell me what you like about them, I can probably narrow down my thoughts to those areas.
These are higher yielding funds primarily because of the risks they're taking on. For example, BIZD is comprised of BDC, or Business Development Companies, that make high interest loans to private businesses. They can be in good financial standing or relatively poor. If the bottom were to ever fall out of the economy, this fund would get obliterated, much like it did during the COVID crash, losing over 60% of its value in very short order. This fund hasn't been around since the financial crisis in 2008, but we'd see a similar drawdown during that period I'd imagine as well.
For CLOZ, it pools together a bunch of senior secured debt from private corporations and issues out a high paying dividend.
Whether or not these funds are right for you heavily depends on whether or not you understand what they're made up of. CLOs and BDC loans are very niche products and one must understand the heightened risks of investing in them. I personally would not own them, but that isn't to say your tolerance for risk is the same as mine.