I dont follow all sports cards, mainly just modern basketball. I can tell you right now that this year's rookie class is hot hot hot! All basketball retail boxes being scooped up quick in Target and Walmart. Collectors/investors paying top dollar for higher end boxes/cases. Everyone wants a piece of Zionmania even non sports cards people.
Lebron James rookies are one of the hottest cards people are buying, same with Luka and Kobe. People are now paying around $7k for Lebron's PSA 10 chrome rookie cards (a couple months ago, they were going for around $2k!). Looks like vintage cards and memorabilia are doing pretty well too!
Not everything though is gravy in the cars world. Some out there are trimming their cards to achieve 10s. PSA and BGS for some reason cannot catch these trimmed cards and have been caught grading what once were 8s or 9s are now 10s. There are a lot of cases with this, which puts collecting cards at a higher risk in the long run I believe.
But yeah those are my thoughts.