Tascam 12, various Zooms and the SSL SiX and
Big SiX should all be on your radar too.
I’ve had good results with my MOTUs - an 828mk2 and now an M4, but you may learn a lot in the threads I linked above.
The Tascam 12 or a similar < $1k option is a good place to start. Those are solid workhorses, and you will learn their limitations over time while you save for something nicer - if you even need to upgrade. If money is no object, go straight to the SSL or RME. But as a beginner, you may not appreciate what you have. I’m not sure I would, and I’ve been doing this casually for over 20 years.