Sounds like you are saying there is no reason United should be fixated on Mourinho, we should give it to a less glamorous manager?
Not necessarily. I suppose I'm making a broader point really. It just seems to me that we all get ourselves tangled up in this idea that only Mourinho (or whoever) will do and no one else could possibly bring success to the club. It has to be a top, top, top manager. When the reality is that the top clubs tend to recycle the top managers amongst themselves so judging them on success alone isn't necessarily the yardstick it might seem. Relying lazily on past success for indications as to future performances won't always work and causes clubs to be very narrow minded in their approach to hiring. Big clubs ideally don't want to take chances on younger, less proven managers.
For example, say we want Mourinho. You assume we have a metaphorical, subjective checklist with the things we as a club require on it. So if we stay true to our apparent ideals we have we'd want a manager who, among other things:
-has a record of success in both domestic competition and the CL
-has a good record in the transfer market and contacts with the right people
-is capable of handling the level of scrutiny that comes with being United manager
-has a good record, or willingness to bring through youth
-favours an attacking, exciting brand of football
-contributes to a positive atmosphere around the club and a good working enviromnent with both existing and new staff
-will stay at the club for a longer period than seems to be the norm now
Obviously for Jose to win out they may have to be willing to forego some of the above in pursuit of the ultimate goal of immediate footballing success (and if that's the case then that's okay, but we can't bleat on about "not being that type of club" and the "United way"). You have to be honest with yourself that you're basically trying to increase the chances of success to the highest possible degree to the potential exclusion of other ideals. But the idea that getting Mourinho, for example, would guarantee succcess is crazy. The odds might be better, but you do so having made these compromises over things that were once fundamental to you.
Equally, perhaps you could make just as convincing a case for someone like Pochettino. From the outside he fits much more closely with the ideals and style of football we're used to. To-date, he hasn't really won anything or managed a 'super club' so you take a risk on that front. But if he wins the league this season he'll probably be perceived to have moved into the top bracket of managers and Spurs will be tormented trying to hang on to him.
I suppose what I'm ultimately getting at is that I think there's a bigger pool of potential managers that can do these jobs than the clubs and the media would have us believe. Luis Enrique hadn't exactly been a roaring success until he pitched up at Barca (and even then it took time) and unless you discount his role in their successes it raises the question of whether the status of 'top manager' really tells you all you need to know. For example, Ancelotti won 1 league title in 8 seasons at Milan, 1 in 2 years at Chelsea, 1 in 2 years at PSG and none in 2 years at Madrid. He's been a manager since 99 in charge of lots of top clubs and in terms of domestic success alone, while managing really strong, often dominant clubs, he won, in a 15 or 16 year career, 3 league titles. That's not to say he's not a great manager, or that he doesn't do well in Europe particularly, but there has to be more to it. I dunno, this has been quite rambling, but I'm not at all convinced that picking up one of these managers is always worth it in terms of going against the principles you want to run your football club on. Not to even mention that the chances of them being successful aren't so much greater that it's a complete no-brainer.
On another point, the media reporting of it as a two horse race between Giggs and Mourinho is really weird. Mourinho is so many of the things that Giggs is not (at least based upon his apparent ideals and short managerial tenure previously). But then Giggs, based upon his feeling for the club, is likely to have more consideration for its long term health than Mourinho would. Those two, very different managers being the options suggests we don't have a type of manager in mind, but rather that we're being led in directions are almost diametrically opposed. For example, if you found out the shortlist was Klopp, Tuchel, Pochettino etc. you'd have an idea what we were aiming for. As it is, depending on the appointment, the way the club will be immediately run is wildly differently. That doesn't seem sensible to me at all.
EDIT: The TL;DR version is that I'm not convinced hiring outside of that top bracket of managers is necessarily the obstacle to success people see it as
I've noticed this in rugby too (union that is) There's way more focus on the coaches and less on the players than there used to be
I presume, in the Northern Hemisphere at least, it's an attempt to bridge the growing skill gap with the south? That and the bigger these guys get the less likely they are to rely upon skill so it's up to the manager