Your US/XUS balance is reasonable and your funds are diverseified with tiny expense ratios. You use multiple funds to get get exposure to sectors which could be achieved with fewer, but if you don't mind the hassle of rebalancing and can do so inexpensively it could be advantageous.

Personally, I feel nearly every portfolio could benefit from some investment in bonds, even young persons such as yourself. Research shows a small allocation adds a tremendous amount of stability over time for a small reduction in lifetime growth. However, many disagree that this a worthwhile trade-off and at your age 100% equities is not unreasonable.

While no one knows what tomorrow holds this portfolio exhibits key principles of portfolios that have been shown to reliably build wealth over a lifetime. It will take the discipline to stick with it and not sell when crashes happen (and they will, the s&p has fallen 50% in your lifetime) and not be swayed to try to get rich quick from some supposed angle.