Depending on your definition of "modern", Wizards&Warriors is both quite approachable and deep, with some of the best dungeons in any RPG. From there you can move on to Wizardry6-8 which are similar (two of them have the same lead designer) but more hardcore. Grimoire is a blobber in the same style, but I haven't given it a proper playthrough yet so I can't recommend it. If you are going to play Grimoire, I'd suggest doing it after Wizardries since its mechanics are even more complicated - there's just more of everything: PCs, races, classes, stats, skills.
Of the blobbers released in the past 10 years, I second Legend of Grimrock 2 (great atmosphere and level design, interesting character system) and Paper Sorcerer (very original premise and unique art style). I found Operencia way, way too streamlined and easy and Bard's Tale 4 just unplayable.
7 Mages is a mixed bag - some very creative level setups and innovative mechanics (party splitting, music-based magic), but character building and itemization is a bit too shallow, and writing is rough. Still was fun to play through once. Might&Magic 10 is ok overall but has pacing issues, I got bored with it halfway through (though to be fair, I had the same experience with every single Might&Magic game I've playes, so YMMV).
Finally, if your definition of a blobber is not too purist, Lords of Xulima is a blobber in everything but perspective. Its exploration is isometric, but the party moves as a single unit and combat is a classic front/back row affair (with some innovations regarding flanks and weapon reach). Also some fun level design there, and great character system with lots of customization and very tight skill points economy. Gets a little HP-bloaty by the end, but overall a great game.