Why PLO starting hands aren't a chart
Hold'em has 169 starting hands and a neat grid. Pot-Limit Omaha has 16,432 — because you get four cards and must use exactly two of them. So there's no chart to memorise; instead you learn to read a hand against the four things that matter: pairs, suitedness, connectedness and high-card strength. The grader above scores any hand on exactly those, so you build the instinct rather than looking up a table.