The only relevant EU references are:
1: The Krayt Dragon pearl hunt, which is a reference to Tusken lore and mostly KOTOR, even though the Greater Krayt Dragon in the episode looks more like a penis-shaped sandworm with a big nose than a greater krayt (although a staff member of the show claims that it at least still has many legs but that's about it), and Tuskens never asking for help to hunt one down, just give you the honor of proving yourself to them by hunting one.
2: Phase III Dark Troopers, which are somewhat faithful but don't really do much except pick up the baby, get in a fight then get cut down easily by Luke, despite that Dark Troopers in old canon were made out of lightsaber-resistant materials.
3: Tython. They don't really do much with it so not much they can get wrong.
4: Namedropping Thrawn, who at this point is barely anything like his EU counterpart or as competent.
5: An HK-assassin droid, which really doesn't look like one from the OT era because its just based on some random concept art Filoni borrowed again.
6: A barely visible list of EU prison planets that's in an episode for like a second.
7: Gamorrean arena fights being a popular sport.
8: Alluding to Jaster Mereel (spelled Jaste in the show) and Jango's Mando Civil War history.
9: Bib Fortuna replacing Jabba and being in a fat new body (will likely be retconned or dumbed down by some clueless Disney writer).
10: Krayt Dragons eating sarlaccs.
You could also point out Luke being competent like his pre-Disney counterpart, but they've already said the show won't retcon the wretched sequels.
Some will say the ant-alien in that one episode on Tatooine is a reference to past insect species, but apparently that puppet was only made because the director of the episode was the director of Ant-Man.
Some will also point out the Knobby White Spiders appearance as being a reference, but there's nothing in common with the spiders in Mando except Filoni re-using the design for the 4th time.
All in all, there's more Filoni Wars and Disney Wars references than anything else.